Cisco Unified Communications Managertelekomunikacije.etf.bg.ac.rs/predmeti/ot4ipt/03_CUCM.pdf · Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential

© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1

Cisco Unified Communications Manager


Agenda1. Clustering Cisco CallManagers2. Deployment Models3. CallManager Signaling Architecture4. H.323 Gateway5. Media Gateway Control Protocol (MGCP)6. Type of voice interfaces7. Route Plan Basics8. Telephony Class of Service9. Media Resources10. Other CallManager Features11. Call Admission Control (CAC) and Automated Alternate Routing (AAR)12. Survivable Remote Site Telephony (SRST)13. Extension Mobility14. Cisco IP Communicator15. Cisco VT Advantage16. Troubleshooting Tools


1. Clustering Cisco CallManagers


Cluster Definition

SQL Database relationship defines the clusterCluster has one Publisher server and ‘N’ number of Subscriber serversOne database on the Publisher replicated to Subscribers

Publisher

Subscriber

Subscriber

Subscriber


Intra-Cluster Communication

Intra-Cluster Run-Time Data in SDL

Intra-Cluster Run-Time Data in SDL

SQLDatabase

SQLDatabase

Publisher

Subscriber

Subscriber

Subscriber

Cluster DeterminationCluster Determination Device Registration and Redundancy

Device Registration and Redundancy


Database Writes/Updates

1. The Publisher server always updates its own local database for changes.

2. The Subscriber servers only update the Publishing server’s database for changes.

3. If Publisher’s database is not available, the updates from subscriber will not be saved.

Publisher

SQLClient

Subscriber

SQLClient

Subscriber

SQLClient

2

1

DatebaseUpdates

ComputerClient

Client

3XX


Database Replication

Changes made to the database are replicated out via transactional process from Publisher to Subscribers.

If the link is down, SQL keeps a transaction log and replicates the data when possible.

Publisher

SQLClient

Subscriber

SQLClient

Subscriber

SQLClient

Database Replication

ComputerClient

Client


Intra-cluster Run Time Data: Registration

Cisco CallManager List1 – B2 – D3 – H

Cisco CallManager List1 – B2 – D3 – H

B

D

H

TCP KA

TCP Connect (Standby)

1000

Skinny Connect Register (active)

Device with extension ‘1000’is registered to me (CCM B).


Clustering OptionsDistribute IP phones based on DNCallManager redundancygroups based on DN range

Primary

Secondary/Backup

Tertiary/Last Resort

Publisher, Backup and TFTP Server

Primary CM1 to 7500

To 7,500 IP PhonesTo 7,500 IP Phones To 15,000 IP PhonesTo 15,000 IP Phones

Publisher and TFTP ServerPublisher and TFTP Server

1 to 7500

7501 - 15000

Backup

To 30,000 IP PhonesTo 30,000 IP Phones

Publisher and TFTP ServerPublisher and TFTP Server

15001 to 22500

22501 to 30000

1 to 7500

7501 to 15000

Backup

Backup

III


Cluster RecommendationsUp to 7,500 IP Phones

A cluster of two Cisco CallManagersPublisher is also the Secondary. Single Active Cisco CallManager

Publisher

Primary CallManagerPhone 1 - 7500

DFWCLSTR1

ClusterClusterA

BCisco CallManager

Group BACisco CallManager

Group BA


Cluster RecommendationsUp to 15,000 IP Phones

A cluster of four Cisco CallManagersStand-alone Publisher.Two Primary Cisco CallManagers (B and C).One Backup Cisco CallManager (D).

Publisher

A

B

ClusterCluster

C

DCisco CallManager

Group CDCisco CallManager

Group CDCisco CallManager

Group BDCisco CallManager

Group BD


Cluster RecommendationsUp to 30,000 IP PhonesA cluster of eight Cisco CallManagers

Stand-alone Publisher and Cisco TFTPFour Primary Cisco CallManagers (B-C-E-G).Two Backup Cisco CallManager (D and H).

ClusterCluster

Cisco CallManager Group CDH

Cisco CallManager Group CDH

Publisher Cisco TFTP

A F

B C E G

Cisco CallManager Group GHD

Cisco CallManager Group GHD

Cisco CallManager Group EHD

Cisco CallManager Group EHD

Cisco CallManager Group BDH

Cisco CallManager Group BDH

HD


2. Deployment Models


Single Site: Overview

Cisco CallManager, Applications and DSP Resources at same physical locationSupports up to 30,000 IP Phones per clusterMultiple clusters can be interconnected via Inter-ClustertrunksPSTN used for all external calls

PSTN

Applications(VMail, IVR, ICD, ...)


CallManagerCluster


Centralized Call Processing: Overview

CallManager at central siteApplications and DSP resources can be centralized or distributedSupports up to 30,000 IP phones per clusterCall admission control (limit number of calls per site)Survivable Remote Site Telephony for remote branches

PSTN

IP WAN


Headquarters

Branch A

Branch B

CallManagerCluster

SRST-enabledrouter


Headquarters

Branch A

Distributed Call Processing: Overview

CallManager and Applications located at each siteUp to 30,000 IP Phones per site100+ sitesTransparent use of PSTN if IP WAN unavailable

PSTN

IP WANGatekeeper


CallManagerCluster

GK

Applications

CallManagerCluster

Branch B

Applications

CallManagerCluster


3. CallManagerSignaling Architecture


H.323 to Skinny Client Call Flow Diagram

Cisco IP Phone

SCCP

PSTN

V

CallManager

V

H.323

RTPH.323Gateway


H.323 Client to Skinny Client Call FlowH.323

GatewayCisco

CallManagerCisco

IP PhoneH.225 Setup

Station Set Lamp (Blink)Station Set Ringer (On)

Station Set Lamp (Steady)

Station Start Media Transmission

Station Set Ringer (Off)

Station Off Hook

H.245 Master/Slave Determination

H.245 Terminal Capabilities Set

H.245 Open Logical Channel

Station Call InfoH.225 Setup Ack

H.225 Alerting

Station Start Media ReceptionH.245 Open Logical Channel Ack

H.245 Terminal Capabilities Set Ack

H.245 Master/Slave Determination Ack

H.225 Connect

ConversationStation On Hook

H.245 Request Channel Close

H.245 Request Channel Close Ack Station Stop Media Reception

Station Stop Media Transmission

H.225 Release Complete Station Set Lamp (Off)

SCCPH.323


Typical Q.931 Messages

CallingParty

Network CalledParty

Setup

Setup

Setup Acknowledge

Connection Acknowledge

Connect

Alerting

Call Proceeding

Connection Acknowledge

Information

Call Proceeding

Alerting

Connect


Cisco IP Phone Client to Cisco IP Phone Calling

Cisco IP Phone Cisco CallManager Cisco IP Phone

Conversation

Station Set Lamp (Off)

Station Off Hook

Station Digit Dialed

Station Play Tone (Dial Tone)Station Set Lamp (Steady)

Station Stop Tone (Dial Tone)Station Digit DialedStation Digit Dialed

Station Play Tone (Ringback)Station Call Information

Station Set Ringer (On)Station Set Lamp (Blink)

Station Off Hook

Station Set Ringer (Off)Station Start Media TransmissionStation Start Media Transmission

Station Start Media ReceptionStation Start Media Reception

Station Set Lamp (Steady)Station Play Tone (Off)

Station On HookStation Stop Media TransmissionStation Stop Media Transmission

Station Stop Media ReceptionStation Stop Media ReceptionStation Set Lamp (Off)

Station On Hook

SCCPSCCP


4. H.323 Gateway


IOS Configuration - SampleDial-peer voice 10 potsDestination-pattern 1030Port 3/0/0

Dial-peer voice 100 voipDestination-pattern 1 . . . Session target ipv4:10.0.0.2Preference 0

Dial-peer voice 101 voipDestination-pattern 1 . . .Session target ipv4:10.0.0.1Preference 1


CallManager H.323 Configuration - 1








5. Media Gateway Control Protocol (MGCP)


General Concepts

MGCP is, in essence, a master/slave protocol, where the gateways are expected to execute commands sent by the Call Agents.The call control "intelligence" is outside the gateways and handled by external call control elements called Call Agents.MGCP is a text based protocol with plain-text commands sent over UDP port 2427 called Signaling Plane.


General Concepts – Call Agents

The Call Control elements that play the Master role in MGCP are known as Call Agents.

CA provides “centralized” call intelligence.A Call Manager controlling an MGCP gateway is an example of a Call Agent.MGCP does not define a mechanism for synchronizing Call Agents. They need to have their own means of synchronizing. This function is achieved in Cisco’s Call Manager Clusters by the SDL layer.


General Concepts – End Points

An end point is a network element that provides conversion between the audio signals carried on telephone circuits and data packets carried over packet networks.

One telephony gateway can have multiple endpoints. e.g. Multiple ports on a c2600.


General Concepts - Connections

A point to point connection is an association between two endpoints with the purpose of transmitting data between these endpoints.

For point-to-point connections, the endpoints of a connection could be in separate gateways or in the same gateway.

• Voice traffic is carried over IP/RTP called Data Plane.


General Concepts - Endpoint Identifiers

Endpoint identifiers have two components:Domain name of the gateway that is managing the endpoint (case

sensitive)Local name within that gateway (case insensitive)

e.g. AALN/S1/SU0/[email protected]

AALN= Analog Access Line eNdpoints

S1/SU0/0 = Slot 1/SubUnit 0/Port 0


For example, MGCP FXS CallNTFY O: L/hd

RQNT R: L/hu,D/[0-9*#] S:dl

NTFY O: 4

RQNT R: L/hu, D/[0-9*#] S:

NTFY O: 5

CRCX

200 OK (RTP Port Info)

CallManager

MGCP Gatewaye.g. VG200

MDCX


Device Requirements for Call Preservation

• Active Connection Maintenance– RTP streams between

devices• Disconnect Supervision

– End user– Timed– Media Streaming Failure

(MSF)• Switchover Algorithm

– Graceful – Immediate


CallManager MGCP Configuration - 1



In the upper right, select “Add a New Gateway”



Select the gateway from the pull down


CallManager MGCP Configuration - 41. Enter MGCP Domain Name (Need to match hostname and ip domain-name)

2. Description if necessary.

3. Select Module Type and Click “Insert”


CallManager MGCP Configuration - 51. Select the VIC cards used in the network module.

2. Select Module Type and Click “Update”.


CallManager MGCP Configuration - 6Select the endpoints to configure them




CallManager MGCP Configuration - 8Select the DN to configure them




IOS MGCP Configuration

mgcp• Starts the MGCP process

mgcp call-agent <primary CM ip address>• Primary CM IP address or DNS name

mgcp dtmf-relay codec all mode out-of-band• Enable DTMF relay

ccm-manager MGCP• Initializes the MGCP process (TCP Socket & MGCP Link monitor)

ccm-manager redundant-host <1st backup> <2nd backup>• Specifies the IP address or DNS name of first and second call

manager backup systems.


IOS MGCP Configuration (Cont’d)

ccm-manager switchback <mode>

• Controls how the gateway attempts to return management to the next higher priority Call Manager in list. (CM Systems must have an open TCP socket to be considered viable)

• Mode Configuration Options:Not specified (default) – Means no switchback; Viola ignores

return of a higher priority CM.“graceful” -- Switches back after last active call ends.“immediate” -- Switches back as soon as TCP link to primary is

established.


IOS MGCP Configuration (Cont’d)

More Switchback Options:ccm-manager switchback schedule-time <hh:mm>

• Allows specific time-of-day switchback. (If the specified time earlier than current time, waits until next day.)

ccm-manager switchback uptime-delay <1-1440>• Allows user to set a switchback delay timer in minutes

Switchback can be forced from enable mode:• VG200-1# ccm-manager switchover-to-backup


IOS MGCP Configuration - Sample

Required MGCP statements:mgcp <== Starts the MGCP processmgcp call-agent <ip address #1> <== Primary Call Manager DNS name or IP addressmgcp dtmf-relay codec all mode out-of-band <== Enable DTMF relay

Required CCM-Manager statements:ccm-manager mgcp

For Redundant configurations:(First backup CM) (Second backup CM)

ccm-manager redundant-host <ip address #2> <ip addr #3>

Required Dial-Peers: (ONLY the following)dial-peer voice xxx pots

application MGCPAPP <== Required!port x/x/x


Do not use these commands

• For MGCP managed endpoints (those with “application MGCPAPP” in the dial-peer statement), all dial-plan related configuration elements are controlled by Call Manager-

Don’t configure:• destination-pattern• session target• number expansion• connection PLAR/tie-line/trunk (voice-port)• Codec


IOS MGCP Config Server

Automatically download your MGCP gateway configuration from CallManager/TFTP server:

Router(config)# ccm-manager config server 10.0.0.1Router(config)# ccm-manager config

* But you still need to setup MGCP in the CallManager first.


IOS MGCP Config Server – Result!ccm-manager mgcpccm-manager music-on-holdccm-manager config server 10.0.0.1ccm-manager config!mgcpmgcp call-agent 10.0.0.2 2427 service-type mgcp version 0.1mgcp rtp unreachable timeout 1000 action notifymgcp package-capability rtp-packagemgcp package-capability sst-packageno mgcp package-capability fxr-packageno mgcp timer receive-rtcpmgcp sdp simplemgcp fax t38 inhibitmgcp rtp payload-type g726r16 static!mgcp profile default!!dial-peer voice 999300 potsapplication mgcpappport 3/0/0

!


6. Type of voice interfaces


7. Route Plan Basics


PSTN

IP WAN

A

A

V

V

Gatekeeper(s)

Primary Voice PathPrimary Voice PathStrip “52” and deliver

61111 to remote Call Manager

Secondary Voice PathSecondary Voice PathPre-pend “1408” and send to PSTN

(408) 526-XXXX5 Digit Internal Dialing

Users required to dial7 digits for Intersite calls

“526-1111”

Dial Plan Visual Objective

San Jose

Philadelphia(215) 555-XXXX

5 Digit Internal Dialing


CallManager

Router/GW PSTN

IP WAN1000

1001

Gatekeeper

914085264000

Route Plan Call Types

CallManager routes two basic call types:OnOn--Cluster CallsCluster Calls – Destination Directory Number (DN)

is registered with CallManagerOffOff--Cluster CallsCluster Calls – External route patterns must be

configured on CallManager

9.1408XXXXXXXRoute

Pattern

GK RemoteCallManager

I


RoutePattern

RouteList

RouteGroup

1st

Choice2nd

Choice

PSTNIP WAN

External Route Elements in CallManager

GK

RouteGroup

1st

Choice2nd

Choice

Con

figur

atio

n O

rder

Con

figur

atio

n O

rder

Route Pattern•• Matches dialed number for external callsMatches dialed number for external calls•• Performs digit manipulation (optional)Performs digit manipulation (optional)•• Points to a Device / Route List for routingPoints to a Device / Route List for routing

Route List•• Chooses path for call routingChooses path for call routing•• Points to prioritized Route GroupsPoints to prioritized Route Groups

Route Group•• Performs digit manipulationPerforms digit manipulation•• Points to the actual devicesPoints to the actual devices

Devices•• Gateways (H.323, MGCP)Gateways (H.323, MGCP)•• GatekeeperGatekeeper•• InterInter--cluster Trunk (remote CM)cluster Trunk (remote CM)

V


Understanding Route Plans

Route Pattern

Route Group

Device(GW)

Device(GW)

Route Group

Device(GW)

Device(GW)

Route PatternThe Route Pattern would represent an E.164 addressor address range that had some special route handling needs. The Route Pattern points to a single Route ListRoute Listto perform this route handling. The Route Pattern performs the digit manipulation (subtract or add digits) for the matched pattern. There is only one digit manipulation table for any given Route Pattern.

Route ListThe Route List points to one or more Route GroupsRoute Groupsthat allow for Call Routing based on preference. Thisis often looked at like a trunk group. The Route Listcan direct all calls to the Primary Route Group andthen use the Secondary Route Group if the Primaryis unavailable.

1stChoice

2ndChoice

Route GroupThe Route Group points to one or more DevicesDevicesthat allow for Call Routing based on preference. This is often looked at like a trunk group. The Route Group can direct all calls to the Primary Device and then use the Secondary Device if the Primary is unavailable.

User Dials Number

1stChoice

2ndChoice

2ndChoice

1stChoice

DeviceTypically a GW or H.323 Endpoint(Netmeeting)

Route List


Internal vs. External Numbers

DN Route PatternLine #s

GRP Pick

Park

MEET_ME_CONFERENCE

4005

3510

200

361X

9.1866XXXXXXX

9.@

9.1[2-9]XX[2-9]XXXXXX

9.1XXXXXXXXXX

9.91!

9.11


Dialing Behavior

Cisco CallManager

1001

1000 Dialed Digits

<none> List Potential MatchesList Potential Matches

1 List Potential MatchesList Potential Matches



1 List Current MatchList Current Match

Call Setup

IV


Digit Collection

Route Pattern9.1866XXXXXXXX

9.011!

9.1612[2-9]XXXXXX

9.[2-9]XXXXXX

9.911

9.11

User’s dial string:

CallManager actions:

<off hook>>

Provide dial toneWait

9.1866XXXXXXXX

9.011!

9.1612[2-9]XXXXXX

9.[2-9]XXXXXX

9.911

9.11

Might Match

Might Match

Might Match

Might Match

Might Match

Might Match

9

Break dial toneWait

91

Wait

9.1866XXXXXXXX

9.011!

9.1612[2-9]XXXXXX

9.[2-9]XXXXXX

9.911

9.11

Might Match

No Match

Might Match

No Match

No Match

Might Match

918

Wait

9.1866XXXXXXXX

9.011!

9.1612[2-9]XXXXXX

9.[2-9]XXXXXX

9.911

9.11

Might Match

No Match

No Match

No Match

No Match

No Match

918691866918665918665591866555918665551918665551291866555121918665551212

No other patterns could matchExtend call

9.1866XXXXXXX

9.011!

9.1612[2-9]XXXXXX

9.[2-9]XXXXXX

9.911

9.11

Match!

No Match

No Match

No Match

No Match

No Match

V


User’s dial string:

CallManager actions:

Inter-Digit Timeout

Route Pattern9.1866XXXXXXXX

9.@

9.1[2-9]XX[2-9]XXXXXX

9.1XXXXXXXXXX

9.91!

9.11Provide dial tone

Wait

<off hook> 9.1866XXXXXXXX

9.@

9.1[2-9]XX[2-9]XXXXXX

9.1XXXXXXXXXX

9.91!

9.11

Might Match

Might Match

Might Match

Might Match

Might Match

Might Match

911 <timeout>

Break dial tone

Wait

9.1866XXXXXXXX

9.@

9.1[2-9]XX[2-9]XXXXXX

9.1XXXXXXXXXX

9.91!

9.11

Might Match

Might Match

Might Match

Might Match

Might Match

No Match

911 <timeout>

Wait

9.1866XXXXXXXX

9.@

9.1[2-9]XX[2-9]XXXXXX

9.1XXXXXXXXXX

9.91!

9.11

No Match

Might Match

No Match

Might Match

Might Match

No Match

9111 <timeout>

CallManager will wait for the timeout

Closest match rules apply

911<timeout><timeout>

Matches 1 billion+ digit strings

Matches 10 million digit strings

Matches 1 digit string







9.1866XXXXXXX

9.@

9.1[2-9]XX[2-9]XXXXXX

9.1XXXXXXXXXX

9.91!

9.11

No Match

No Match

No Match

No Match

Match!

No Match




V


Route Plan Configuration Process

MGCP BasedVG200

Cat 6K GW’s26003600

H.323 BasedAll IOS GW’s

Device ProtocolDevice ProtocolH.225H.225

Remote CallManagerDevice ProtocolDevice Protocol

InterInter--cluster Trunkcluster Trunk

VAdd Gateway Devices11

Build Route Groups from available Devices

Route Group 1Remote CallManager

2600 (MGCP)3640

Route Group 1Remote CallManager

2600 (MGCP)3640

Route Group 2Catalyst 6K Digital

2600 (MGCP) DigitalVG200

Route Group 2Catalyst 6K Digital

2600 (MGCP) DigitalVG200

22

Build Route Lists from available Route Groups

Route List 1Route Group 1Route Group 2Route Group 3




33

Build a Route Pattern to available Route Lists or Gateway Devices44

V

V

III


Route Group Configuration


Route/Hunt List Configuration


Route Pattern/Hunt Pilot Configuration

Configure a route pattern and point it to a gateway or route listConfigure a route pattern and point it to a gateway or route list


Dial-Peer Configuration on H323 Gateway

• Local dial peer

Dial-peer voice <name> potsDestination-pattern <digits or wildcards>Port <x/x/x>

Dial-peer voice <name> potsDestination-pattern <digits or wildcards>Port <x/x/x>

• Network dial peer

Dial-peer voice <name> voipDestination-pattern <digits or wildcards>Session target ipv4:<ip address of target>

Dial-peer voice <name> voipDestination-pattern <digits or wildcards>Session target ipv4:<ip address of target>


Route Plan Report


Route Plan Report

The following patterns/directory numbers are displayed:call park numberscall pickup numbersconference numbersroute patternstranslation patternsvoice mail pilotetc.

Save report data into a .csv file that you can import to other applicationsThe .csv file contains more detailed information than the web page and also includes IP phone extensions


8. Telephony Class of Service


General Definition

PSTN

V IP WAN

Employee

Long Distance

International

Class ofService 1

Lobby

Class ofService 2

Employee

Class ofService 3

Executive

Executive

III


Subnet/ PartitionB

Subnet/ PartitionC

Subnet/ PartitionD

Subnet/ PartitionA

Access List/ Calling Search Space• permit B• permit C• (implicit) deny D

Access List/ Calling Search Space• permit B• permit C• (implicit) deny D

Partitions/ Calling Search Spaces:Analogy with Subnets/ Access Lists

Partition Partition ––““Where you areWhere you are””Collects devices with similar “reachability” characteristicsItems placed in partitions: Directory Numbers (DN), Route Patterns, Voice Mail Ports...

Calling Search Space Calling Search Space ––““Where you may callWhere you may call””

• Set of rules to set call restrictions/ permissions

• Defines which partitions a device may search to reach a dialed number

• Is assigned to IP phones, GWs


Partitions and Calling Search Spaces Analogy

Rita Dave972 813 5000

SWB Dallas Yellow PagesDave 972 813 5000

Rita wants to call Dave

Dave lists his numberIn a directory

To do so, she needs to know Dave’s number

II



Rita Dave972 813 5000


To look up numbers, Ritalooks through the

directories she owns

If she doesn’t havethe right directory…

SWB Dallas White PagesOutlook Address Book

Little Black Book

…she can’t place the call

Rita’s list of directories

III



Rita Dave972 813 5000


But if she has thedirectory Dave has

listed his number in…

SWB Dallas White PagesSWB Dallas Yellow Pages

Little Black Book

Rita’s list of directories

…the call will go through

SWB Dallas Yellow Pages

SWB Dallas Yellow Pages

III



Rita Dave972 813 5000


SWB Dallas White PagesSWB Dallas Yellow Pages

Little Black Book

Rita’s list of directories The directory in which Dave’s number is listed is his number’s partition

The list of directories in which Rita looks up numbers is her calling search space

II


Partition Definition

A logical grouping of patterns.

All patterns in a partition are equally reachable.

Assigned to Directory Numbers and Route Patterns

PartitionLobby

LobbyPT

PartitionEmployee

EmployeePT

PartitionExecutive

ExecutivePT

PartitionGateway

Local and WANGatewayPT

Directory Numbers63500635016350263503



Route Pattern8.7XXXX (WANGWPT)9.1! (LongDisGWPT)

9.011! (InternationalGWPT)


Partition Configuration

Assigned to Directory Numbers, Route Patterns, Translation PatternsAssigned to Directory Numbers, Route Patterns, Translation Patterns


Calling Search Space Definition

An ordered list of partitions. Digit analysis looks through the caller’s calling search space (list of partitions) when searching for the closest match for the caller’s dialed number.Assigned to Devices, Phones and Gateways, and Translation Patterns.

Lobby Phone Employee Phone Executive Phone Local and WANGateway

Calling Search SpaceEmployeePT

Calling Search SpaceEmployeePTWANGWPT

LongDisGWPT

Calling Search SpaceEmployeePTExecutivePTWANGWPT

LongDisGWPTInternationalGWPT

Calling Search SpaceEmployeePT


Calling Search Space Configuration

Assigned to Devices (Phones, Gateways, etc.) and Translation PatternsAssigned to Devices (Phones, Gateways, etc.) and Translation Patterns


8. Media Resources


Media Resources

4 Resources are supported and shared:Unicast conferecingMedia termination pointTranscoding Music on hold

Why share resources?Allow hardware and software resources to coexist. Enable Cisco CallManager access resources available in the cluster.Load distribution within a group of similar resources.Allocate resources based on user preferences.


Conference Bridge (CFB)

In an Ad-Hoc conference, a conference controller can add participants to a conference. In a Meet-Me conference, the conference controller provides a bridge or directory number for participants to dial. Software and Hardware conference resources are available.


RTP

RTP

RTPRTP

Phone A

Phone B

Phone A

Phone B

Phone C

CFB

Unicast Conferencing


Conference Limits

Software Conference LimitsUp to 128 full-duplex streams are configurable.48 users in a single conference or 16 conferencing resources with three users per conference

Hardware ConferenceCatalyst 6000—Mixes all conference participants

G.711 or G.723 or G.729a or GSM/FR*32 conference participants per physical port.

GSM/EFR24 conference participants per physical port

Catalyst 4000 (G.711 only)—Mixes 3 loudest talkers24 conference participants per physical portMaximum of 4 conferences with 6 participants in each.


Activate Cisco IP Voice Media Streaming App


Hardware Conference Bridge Configuration

Catalyst 6000 port MAC address neededCatalyst 6000 port MAC address needed


Software Conference Bridge Configuration


Meet-Me Directory Number Configuration

Ensure directory number or range is unique within the clusterEnsure directory number or range is unique within the cluster


Media Termination Point (MTP)

Enables supplementary services to calls routed through an H.323v1 gateway. Supplementary services are such features as:

call holdcall transfercall parkconferencing

Router/GWH.323v1

PSTN

IP WAN

1001

1002

Cisco CallManagerCisco IP Voice Media Streaming Application

SW MTP

Incoming StreamInitial StreamSupplementary Service Stream

I


Transcoder (XCODE)

XCODE

G.729G.729 G.711G.711

Voice Messaging

MTP

Input StreamInput StreamStream for

Supplementary Services

Stream for Supplementary

ServicesH.323 v1


MTP and Transcoding Limits

Media Termination PointUp to 128 full-duplex streams are configurable.64 resources are available for media termination point application.

TranscoderCatalyst 6000

G723.1 to G.711, G.729a to G.711, GSM/FR to G.711, GSM/EFR to G.71124 transcoders per physical port

G.729a to G.723.1, GSM/FR to G.729, GSM/EFR to G.723.1 or G.729a12 transcoders per physical port

Catalyst 4000G729a to G.711

16 transcoders per physical port


Transcoder Configuration

Catalyst 6000 port MAC address neededCatalyst 6000 port MAC address needed


Music On Hold (MOH)

Types of HoldUser HoldNetwork Hold

Transfer holdConference holdCall park hold

Audio SourcesRecorded AudioLive Audio

Cisco CallManagerCisco IP Voice Media Streaming Application


Music On Hold

Audio Source Input DirectoryC:\Cisco\DropMOHAudioSourceFilesHere

Administrator copies audio source into

this directory

Audio Translator Service

New Files are automatically detected

and processed.

MOH Master Storage Directory

TFTPPath Directory

Cisco CallManager Administration Copies

Audio Source files when they are mapped

Default MOH TFTP Server

MOH Server

Hard Coded MOH Server Audio

Source Directory

DirectShow Filters

Kernel Mode RTP Streaming Driver

A

B

C

DE

F

GH

I

Start


Music On Hold Server Limits

Up to 500 Unicast output streams of audio and 204 Multicast streams simultaneously.

Up to 51 different audio sources can be configured.


Audio Translator Configuration


MOH server Configuration


MOH Service Parameters


Adding and Configuring Audio Source Files


10. Other CallManagerFeatures


Call Park Configuration

Ensure that Call Park Number/Range is unique within the clusterAND

Each Cisco CallManager that devices are registered to need theirown unique Call Park Number/Range

Ensure that Call Park Number/Range is unique within the clusterAND

Each Cisco CallManager that devices are registered to need theirown unique Call Park Number/Range


Cisco CallManager

Call Park2Call Park Code

Sends call park code to display on phone

3

“1234”

4 Dial “1234” to pick up call

Initial Stream

1

1

5

Final Stream5

A B

C

II

Call Park


Call Pickup/Group Call Pickup

Call PickupAllows a user to answer a call that is ringing on any phone in their Call Pickup Group

Group Call PickupAllows a user to answer a call that is ringing on any phone, if they know the Call Pickup

Group associated with that call


Call Pickup Configuration:Step 1 of 2

Ensure that Directory Number is unique within the clusterEnsure that Directory Number is unique within the cluster


Call Pickup Configuration:Step 2 of 2

At the Directory Number Configuration of Phone, assign Call Pickup GroupAt the Directory Number Configuration of Phone, assign Call Pickup Group


DN=1113

DN=1112

Group Number 3500

DN=1111In the same group or not in the same group

Initial call

1Call Ringing on 1111

Call Redirected

3

2 Press call pickup soft key

RTP Stream

4

I

Call Pickup


DN=1113

DN=1112DN=1111 DN=4113

DN=2112

DN=2111

Group Number = 3500 Group Number = 3501

Call ringing on 1112

1

Initial call

2Press group pickup soft

key and enters group number “3500”

3

Call Redirected

4

RTP Stream

II

Group Call Pickup


Cisco IP Phone Services

Provide a dynamic and interactive environment among users, the enterprise, and the Internet—all through the Cisco IP Phone User Interface

Utilize modern web technologies for application services

XML-based data tags for phone content processing

HTTP and TCP/IP for transportWeb servers and web scripting languages for

applications development

ServicesButton

Rocker Key

Softkeys

Keypad

LCD Display


IP Phone Services Configuration

Use IP Address if you don’t use DNSUse IP Address if you don’t use DNS


IP Phone Services Subscription


Service Subscription


Cisco IP Phone Services Examples

Flight Status

TransitSchedules

Stock Tracker

Meeting RoomScheduler

Yellow PagesLookup

WorldClock

Weather


Services Phone Display Examples

Menu Text Input

Image Directory Graphical


“Phone A” calls “Phone B” in the same cluster.

If “Phone B” is busy or no reply from “Phone B” then “Phone A” activates the “CallBack ” feature through “CallBack” soft key.

Now when “Phone B” becomes available, “Phone A” will receive an audio alert and visual notification.

This operation is supported when

1. “Busy” or “Call Forward Busy” from called party; or

2. While no answer from called party, i.e.

• Call forward no answer to Voice mail or any extension.

• Call waiting on and ringing forever or just ringing.

Calling phone should be 7960 or 7940 that support soft keys

What is CallBack?


“Call Back” is supported as softkey on 7940, 7960 and 7970 etc. phones in 3.3 release

If called device is one of

30 SP+, 12 SP+,12 SP,12 S,30 VIP,IP Phone 7910 ,IP Phone 7960, Phone 7935, Cisco VGC Phone, SCCP Phone, CTI route point forwarding calls to above devices.

with in cluster then “CallBack” feature supported.

Supported phones


How to configure “CallBack”(1)

Select SoftKeytemplate



Select Standard User template



Press “Copy”Standard User template



Press insert the template as Standard User-CallBack



Click Configure soft key layout



Select On Hook and move “CallBack”from left to right box by pressing right arrow then press update button



Select Ring Out and move “CallBack” from left to right box by pressing right arrow.Order as first key using up arrow.Press update



Select Device Pool to set this to all users



Select “Standard User –CallBack” and set this template to Default (or set this template to customized device pool),if you want to enable “CallBack” for all users .Press update


How to activate “CallBack”

Check “Cisco Extended Functions” and Update


11. Call Admission Control (CAC) and Automated Alternate Routing (AAR)


CallManager

Example:WAN bandwidth can only support two calls.

What happens when the third call is attempted?

Call #1Call #2

Call #3Causes poor quality for ALLALL calls

Call #3

Why Call Admission Control?

IP WAN

Many tools to give voice priority over data.Call admission control is about preventing voice oversubscription.

Many tools to give voice priority over data.Call admission control is about preventing voice oversubscription.

CallManager

XXXXXX

I


Bandwidth used for CAC

Codec Type G.711 G.723 G.729

Payload 64Kbps 8Kbps 8Kbps

CallManager Locations 80Kbps 24Kbps 24Kbps

Gatekeeper 128Kbps 20Kbps 20Kbps

IOS H.323 Gateways 128Kbps 16Kbps 16Kbps


Centralized Call Processing:Locations based CAC

PSTN

IP WAN


Headquarters

Branch A

Branch B

CallManagerCluster

SRST-enabledrouter

Location 1Location 1

Location 2Location 2


Location Configuration

Location is then assigned to devicesLocation is then assigned to devices


AARAutomated Alternate Routing


• Introduce the AAR For Insufficient Bandwidth feature

• Learn how to configure AAR For Insufficient Bandwidth feature.

Objectives


BackgroundWith Centralized Call Processing, call from one location to another location without sufficient bandwidth…

WAN Busy

Phone ‘A’ in Dallas with extension 1000 dials Phone ‘B’in San Jose at extension 2000, but no bandwidth is available.

Without AAR, caller will get reorder tone and “Not Enough BW”display

Dallas

San Jose

RTP


Function of AAR

• The AAR For Insufficient Bandwidth feature provides a mechanism to automatically reroute the call through PSTN or other network by using an external/alternate number when the call is blocked by Call Manager due to insufficient location bandwidth, such that the caller does not need to hang up and redial the called party again.

• In short, AAR is PSTN Backup for Locations.


AAR Service Parameters

• The AAR feature is enabled by a cluster wide CallManager service parameter “Automated Alternate Routing Enabled”


AAR Configuration – Service Parameters


AAR Configuration – Service Parameters


How does AAR work?With Centralized Call Processing, call from one location to another location without sufficient bandwidth…

WAN Busy

Phone ‘A’ in Dallas with extension 1000 dials Phone ‘B’in San Jose at extension 2000, but no bandwidth is available.

With AAR enabled,…

Dallas

San Jose

RTP


12. Survivable Remote Site Telephony (SRST)


What is SRST ?

Survivable Remote Site Telephony (SRST)Capability in branch office routers for IP Telephony redundancyAlways available branch IP telephony (including calls from & to PSTN)Ideal For Centralized CallManager DeploymentLicensed on number of users at remote site on IOS PLUS softwareSurvivability scales up to 480 users dependent upon platform


What is SRST ?

Survivable / Standby Remote Site TelephonyUnique, industry-first capability in branch office routers for IP Telephony redundancyAlways available branch IP telephonyIdeal for enterprise customers utilizing Centralized Cisco CallManager deployment for IP telephony at their branch offices

Central CallManager clusterHub Site A

VoiceMail

PSTN V

CCM

CCM CCM

primary

tertiary

secondary

IP WAN

Spoke Site B


How It Works: Normal OperationCentral Site Call Manager (CCM)

Real Time Protocol

WAN

Skinny: Protocol for call set up and tear down

Headquarters

Keepalive:Ensures communication link with CallManager

PSTN

Branch Router1750, 2600, 3600,

7200, Cat4224IAD2400

I


call-manager-fallback call-manager-fallback SRST(config)#

• Enables Cisco CallManager fallback capability and puts you in a sub-menu

ip source-address <ip address> [port <port #>]

SRST Configuration: Four Commands

ip source-address <ip address> [port <port #>]SRST(config-cm-fallback)#

• Enables router to receive skinny messages on this particular port. The default port is 2000.

max-ephonesmax-ephonesSRST(config-cm-fallback)#

• Defaults to 0. Maximum phones that will be allowed to register.

max-dnmax-dnSRST(config-cm-fallback)#

• Defaults to 0. Maximum number of directory numbers that can be configured.


13. Extension Mobility


User logged onto phone (Device Profile with x5000)

7960

Single Cluster

What is Extension Mobility?Log onto any 7940/7960 (not 7910) in a CM cluster to get extension Device Profile includes: Extension, services, class of service restrictions applied to phoneLogin modes

auto-logout other phoneskeep login on other phones

Logout modesexplicit logout at phonetimed logout

IP Phone Services

CRA Server

LDAP Directory

User’s office IP Phone 7960 (x5000)

IP LANIP LAN


Example

Joe logs into device SEP000011112222When a login is executed, the current configuration of a device is replaced by a particular User Device ProfileWhen a logout is executed, the current configuration of a device (the User Device Profile) is replaced by the Default Device Profile

Joe’s Profile

SEP000011112222

ADP000011112222

Auto GenerateDevice Profile

Logout Login

7000

70011111


Device Profile

A Device Profile is all the information which defines the configuration of a particular device

Line Appearances, Speed Dials, Softkey templates, Services


Auto-Generated Device ProfileRepresents a snapshot of an existing device’s configuration

Can only be used as a Default Device Profile for the phone in logout state

Cannot be associated with a user


User Device Profile

Generated in the same manner as a device

Can be associated with a user in the same manner as a device

Configurable by the administrator and associated to users in the same manner as a device


What does “Login” Do?

When a login is executed, the current configuration of a device is replaced by a particular User Device Profile

When a logout is executed, the current configuration of a device (the User Device Profile) is replaced by the Default Device Profile of the phone


Login interactions

The user selects the EM Service on the phone


Login interactions

The user is prompted to enter his/her user id and password


Login interactions

If users has more than one device profile associated with them, they are prompted to select the profile they want to log in with


Login interactions

The phone resets and the user’s profile is loaded on the phone


Logout interaction

On selecting the EM Service, the user is shown a confirmation screen


Configuration


Configuring the CallManager

Adding the EM Service

Adding the Service Parameters

Creating default device profile for users

Associating the user with these default device profiles

Configuring the Cisco IP Phones for Extension Mobility


Adding the EM Service

Go to the Cisco CallManager Administration pagesSelect Feature > Cisco IP Phone ServicesEnter the information as shown alongside

The HTTP trigger you created

Always use IP Address Always use device=#DEVICENAME#


Setting the services parameters

On the Cisco CallManager Admin pages go to Service > Service Parameters (machine name) > Cisco Extension MobilityEnter the information as shown alongside


Creating the device profile for a user

A User Device Profile is created in a similar manner to the manual creation of physical devicesStart with the Device Profile Menu item


Device Profile Name and Phone Button Template are required

Adding a new user device profile


Lines, Speed Dials, and Services may be configured after creationClick Update Services and subscribe to EM service

Configuring lines for the profile


User Device Profiles are associated with Users by selecting the Extension Mobility link on the user pages

One or more device profiles can be associated with the user

One of them could also be selected as a default profile

Associate User Device Profile to User


Configuring the phones for extension mobility

The extension mobility configuration is under the device configuration page

Click on ‘Subscribe/Unsubscribe Services’ and subscribe the phone to EM service


Enable Extension Mobility Feature must be checked

The items under this heading will show current device information regarding the login status of the device

Enabling Extension Mobility for a phone


“Use Current Device Settings” will create an Auto-Generated Device Profile as the Default Device ProfileA User Device Profile may be assigned as the Default Device Profile by selecting “Select a User Device Profile”Click ‘Update’ and reset device

Assign Default Device Profile to a phone


Getting the Debug Traces

In the EM Service parameters page change the “Debug traces on”parameter to true.Restart the Cisco Tomcat service. NOTE: Restarting the Tomcat service could disrupt other services running on Cisco Tomcat e.g., CAR, IPMA. The restart should be done at a non-critical time.The debug traces are available under C:\Program Files\Cisco\Trace\emappAlso look at the Tomcat logs located at C:\Program Files\Cisco\TomCat\logs\jasper


Errors and Remedies

Error Code Error message Remedy

0 Check if the CallManager services are running

2,3 Check whether the user id/password is configured in registry HKEY_LOCAL_MACHINE\SOFTWARE\Cisco Systems, Inc.\Directory Configuration\AppUsers\EMApp, if not then the Directory install failed.

Device does not allow logon

In the phone configuration page, make sure “Enable Extension Mobility Feature” is enabled and a logout profile is selected


Errors and RemediesError Code Error message Remedy

6,12 The user has no device profile associated with him

9 Some problem with the LDAP directory

10 The ‘EMApp’ user does not have “Authentication Proxy Rights” enable. Go to the DC Directory Admin and enable this field for this user

Another user logged in

Logout the other user and try logging back


Errors and RemediesError Code Error

messageRemedy

System not enabled for login

The EM Service is not enabled on the server

User logged in elsewhere

The system does not allow multiple logins, either enable this feature on the EM Service Parameters page or logout user from other phone and ask him to login back again


Errors and Remedies

Error Code

Error message

Remedy

100 Check URL of the service, it should end with ‘?device=#DEVICENAME#

101 Either the IIS on the EM Server is down or the URL of the Login Service is not configured in the LDAP


14. Cisco IP Communicator


Product OverviewWhat is Cisco IP Communicator?What is the difference between the Cisco IP Communicator and the

Cisco IP SoftPhone?

Software Overview—Features & Settings

Reference MaterialFor an excellent source of information, please see the Cisco IP

Communicator Administration Guide

Agenda


Understand the products features

Understand the difference between the Cisco IP Communicator and the Cisco IP SoftPhone

Provide troubleshooting knowledge

Understand deployment options

Understand administration of the product

Objectives


Turns your PC into an IP phone

Allows you to take your office phone extension with you on the road

Allows teleworkers to access the same phone services as working on campus

Provides feature parity with Cisco’s advanced IP phones

What is “Cisco IP Communicator?”


Feature parity with 7970 IP phonesMultiple linesIP Phone services support (XML) like extension mobility Integrates with CTI or IP Phone services application written by Cisco or

its partnersSCCP-based to work with Cisco CallManager 3.3(3) SR4

Call control features like shared lines, park, pickup, meet me conference, etc.

Same manageability and scalability as Cisco’s IP phonesWindows 2000 and Windows XP Professional support

Features & Benefits Overview


High-Quality AudioKernel-based media termination so that resource intensive applications will

not affect audio qualityAdvanced jitter bufferSpeaker phone mode with echo suppression and noise cancellationIP precedence marking (layer 3) Audio “Tuning Wizard” for setting input and output levels

VPN supportAuto-detection of Cisco VPN clientAutomated support for most VPN clients that look like NICs (e.g. Microsoft

PPTP client)USB telephony device support

Removes need for keyboard emulation

Features & Benefits Overview


Unified administration with Cisco IP phonesScaling 1 to 1 with IP phones (unlike TAPI-based)Automatic software updates for deployment and management easeCisco CallManager redundancy supportAbility to manage user configurations

CDP supportIntegrates with Cisco Emergency Responder

Administration Overview


SRST RedundancyNot supported in SRST V3.1 or earlier

CallManager ExpressNot supported in CCME V3.1 or earlier

LocalizationSupport English & French only in IPC V1.1(4)

IPMA ManagerExtension Mobility

Not supported before CCM V3.3(4)Video Telephony Advantage Application

What’s not supported?


15. Cisco VT Advantage


Cisco VT AdvantageCisco IP Phone7960G

Cisco VT Advantage on PC with camera

Convergence in Action!

• PC associates with IP phone• Phone registers as a video capable phone

Association

• Initiate Voice/Video Call from IP phone

Dialing

Answer

• Audio on the Phone• Video on the PC (Cisco VT Camera)

Voice

Video


Features & Benefits

Interactive Face to Face CommunicationsVideo calls just like regular phone callsVideo Codec & BW controlled by CMH.263 & Cisco VT Camera Wideband codec support Interoperable with 3rd party H.323 video terminals (Tandberg, NetMeeting)Video Formats – CIFBW Override Local & Remote Video check


Phone Configuration


QoS

Can be changed in CCM Service Parameter

Can configure DSCP for Audio and Video

RTP port is hard coded for 5445


16. Troubleshooting Tools


Tools and Utilities to Configure,Monitor and Troubleshoot CCMCCM administration

Event log

CCM serviceability Tools -> Real-Time Monitoring Tool Trace configuration

SDL TracesSDI Traces

Analysis (XML Files)Q931 translator


Real-time Monitoring Tool (RMT)

From CallManager Administration, select the following:Applications > Cisco CallManager Serviceability

Then from CallManager Serviceability, select the following:Tools > Real-Time Monitoring Tool

RMT uses Windows 2000 Server PerfMon to facilitate monitoring a variety of system variables in real-timeIt can be installed on any PC besides CallManager serverIf all counters are zero the service is stoppedHeart beat should increase once a second


Real-time Monitoring Tool (RMT)

CTI Application/Device/Line Searching & Monitoring.

Device Model Search & Monitoring.

More efficient and accurate device status polling.

H.323 Gatekeeper Perfmon Counters.


RMT – Summary


RMT – Server > CPU & Memory


RMT – CallProcess > Call Activity


RMT – CallProcess > Gateway Activity


RMT – Service > Directory Server


RMT – Device > Device Summary


RMT – CTI > CtiManager


RMT – CTI > CTI Search


RMT – Perfmon > Perfmon Monitoring


Trace Configuration: SDL Trace

SDL (Signal Distribution Trace) allows the development engineer (DE) to know that the code is functioning properly or to find the cause of an error; Provides a direct interface to trace and alarmsSDL Trace can be directed to local files, Windows 2000 Event Logand CiscoWorks 2000Alarms are used to inform the administrator of unexpected events(unable to access a file, database, Winsock or unable to allocate other operating system resources)



Click Here to Go to SDL

Trace Screen

From CCMAdmin, Application > CallManager Serviceability > Trace > Configuration > CCM IP address > Cisco CallManager




Trace Configuration: SDI Trace

SDI (System Diagnostic Interface) files provide the greatest level of detail IP address, time stamps, TCP handle or the device name can be used to find the occurrence of the request or the dispositionof that requestYou can search for the device name (SEPxxxxxxxxxxxx for a phone)or IP address; You should find two occurrences for every request (the request and what ever happenedto the request)


Trace Utility - Node, Service Selection

Select the Node

Select the Service on Which Trace Needs

to Be Enabled


Trace Utility - Configuration

Updates All CallManagers in This Cluster

With These Settings

Click the Update Button to Save the Settings


Trace Utility - Configured ServicesCisco CallManagerCisco CDR InsertCisco CTI ManagerCisco CTL ProviderCisco Database Layer MonitorCisco Extended FunctionsCisco Extension MobilityCisco IP Manager AssistantCisco IP Voice Media Streaming AppCisco Messaging Interface (CMI)Cisco MOH Audio TranslatorCisco RIS (Real-time Information Server) Data CollectorCisco Telephony Call Dispatcher (TCD)Cisco TFTPCisco WebDialer


Trace Utility - Debug Trace LevelError — Used for all traces generated in abnormal path; Minimum amount

of CPU Cycles; this is the defaultSpecial — Non-repetitive messages; ex. all system and device

initialization messagesState Transition — Call processing eventsSignificant — Media layer eventsArbitrary — Used for debugging excluding keepalivesDetail — Detailed debug information; not recommended on systems

during normal system operation; CPU intensive


Trace Utility - Trace DirectoriesDirectory Path: C:\Program Files\Cisco\Trace


Documents

Cisco Unified Communications Managertelekomunikacije.etf.bg.ac.rs/predmeti/ot4ipt/03_CUCM.pdf · Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential