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REQUIREMENT SPECIFICATION Public 1 (8)Prepared Document responsible/Approved

Gran Engstrm Stefan Andersson

Date Rev Linked to object

2004-02-25 D

No.

LZBA 506 403/3

ISDN Basic Access,Layer 1-3

Contents Page

3 ISDN Basic Access, Layers 13 ...........................................................23.1 Scope 23.2 Normative references .........................................................................2

3.3 Layer 1 - Physical interface ................................................................33.3.1 Timer Value ............ ............. ............. ............ ............. ............. ............. .......... ..... ..... ..... .....33.3.2 Power feeding ............. ............. ............. ............. ............. ............. ............. ............. ........... ..3

3.3.3 Feeding voltage ............ ............. ............. ............. ............. ............ ............. .......... ..... ..... .....33.3.4 Digital transmission ............ ............. ............. ............. ............. ............. ............. ............. .....43.3.5 Maintenance ............. ............. ............. ............. ............. ............. ............. ............. ..... ..... .....4

3.4 Layer 2 - Data link protocol ...............................................................5

3.5 Layer 3 - Signalling protocol ..............................................................63.5.1 Restart procedures ............. ............. ............. ............. ............. ............. ............. ....... ..... ..... ..6

3.5.2 Receiving a STATUS message ............. ............. ............. ............. ............ ............. ......... .....6

3.6 Appendix A: Functional changes compared to TINS edition 4 ... ... ... .7

3.7 Document history ...............................................................................8

TeliaSonera Sweden

Networks & Production, Fixed Networks Development, Services

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3 ISDN BASIC ACCESS, LAYERS 133.1 Scope

This specification defines the user-network interface applicable to terminal equipment

to be connected to basic accesses of the TeliaSonera ISDN in Sweden. Reference is

made to ETSI standards. Only deviations from the standards are listed in thisdocument.

3.2 Normative references

[1] ETSI EN 300 012-1 Basic User-Network Interface (UNI). Part 1: Layer 1

specification; (V1.2.2, 2000-05)

[2] ETSI ETS 300 297 Access digital section for ISDN basic access ; (1995-05)

incl. ETS 300 297/A1 (1996-03)

[3] ETSI TS 102 080 ISDN basic rate access; Digital transmission system on

metallic local lines; (V1.4.1, 2003-07)

[4] ETSI ETS 300 402-2 DSS1 protocol; Data link layer; Part 2: General protocol

specification [ITU-T Recommendation Q.921 (1993),

modified] ; (1995-11)

[5] ETSI EN 300 403-1 DSS1 protocol; Signalling network layer for circuit-mode

basic call control; Part 1: Protocol specification [ITU-T

Recommendation Q.931 (1993), modified] ; (V1.3.2, 1999-

11)

[6] SS 63 63 49 Customer Premises Network, CPN Connection of CPNs to

the public telecommunication network ; (1989-09)

[7] SS 63 63 50 Customer Premises Network, CPN Design of physical

communications lines and sockets in CPNs ; (1989-09)

[8] ITU-T Rec. Q.850 Usage of Cause and Location in the Digital Subscriber

Signalling System No. 1 and the Signalling System No. 7

ISDN User Part ; (1998-05) incl. Addendum 1 (2000-06)

and Amendment 1 (2001-07)

[9] ETSI EN 300 196-1 Generic functional protocol for the support of

supplementary services; DSS1 protocol; Part 1: Protocol

specification ; (V1.3.2, 2001-06)

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3.3 Layer 1 - Physical interface

Terminal equipment shall be conformant with ETS 300 012. The following

clarifications are applicable:

The physical interface connector is in accordance with ISO 8877.

REQ 01

3.3.1 Timer Value

(EN 300 012-1 Section 7.6): Timer T1 = 20 sec REQ 02

3.3.2 Power feeding

(EN 300 012 Chapter 10)

The NT supports power source 1, normal and restricted conditions according to

EN 300 012.

It should be possible to power feed, from the network (LT), three different

functions on a given BA. i.e:

- Regenerator (one)

- NT1-UNI (i.e. customer premises equipment)

Consideration shall also be taken to power loss on the subscriber line, e.g. the

copper wire.

The regenerator may consume up to 1 W DC and NT1 up to 1,3 W DC in active

state. The power feeding of the UNI shall be in accordance to EN 300 012, e.g

400 mW in restricted mode. The power loss on the subscriber line is not

included in above figures. The wire area on cables used in access network are

0,4 , 0,5 and 0,6 and 0,7 mm.

Line characteristics (information): The maximum loop resistance for the linebetween the network LT (U interface) and the NT1 (U interface) excluding the

NT1s resistance is 1200 ohm.

The output power feeding requirements from the LT will be 2.7 W DC (for the

regenerator/NT1) and in addition to that maximum power loss for different cable

types (see above).

REQ 03

3.3.3 Feeding voltage

(TS 102 080 Section 10.5.1)

The feeding voltage range from the network (LT) shall be 91-99 V DC.

REQ 04

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3.3.4 Digital transmission

(TS 102 080 Annex A)

2B1Q digital transmission system on metallic loop shall be supported on BA

equipment connected to the network (LT).

REQ 05

3.3.5 Maintenance

(TS 102 080 Chapter 9, Annex A, appendix I and II)All mandatory functions in TS 102 080 Chapter 9 are supported in the network,

including CRC control.

In addition the following functions are supported in the network and shall be

supported by customer premises equipment:

1 NT 1 power status bit (see TS 102 080 A.8.3.2.4 and I-2)

2 DLL-only-actination-bit (see TS 102 080 A.8.3.2.7 and I-5)

3 S/T-interface-activity-indicator-bit (see TS 102 080 A.8.3.2.8 and I-6)

4 Embedded Operation Channel (EOC). The network supports addressing

up to 5 locations. (see TS 102 080 A.8.3.3 and appendix II )

REQ 06

Note:

Two Swedish Standards concerning Customer Premises Network, CPN, are partly

applicable to the customer cable network. These standards describe the requirements

on "Connection of CPNs to the public telecommunication network" and "Design of

physical communications lines and sockets in CPNs". These standards are:

- SVENSK STANDARD SS 63 63 49 [6]

- SVENSK STANDARD SS 63 63 50 [7]

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3.4 Layer 2 - Data link protocol

Terminal equipment shall be conformant with ETS 300 125. TE

Point-to-point data procedures can be provided as an option instead of point-to-

multipoint procedures.

For more detailed information about layer 2, see LZBA 506 403/6B; "ISDN User -

Network Interface; Data Link Layer Specification".

REQ 07

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3.5 Layer 3 - Signalling protocol

Layer 3 signalling deviations towards EN 300 403-1, Q.850 and EN 300 196-1 are

listed in chapter 4.5 (LZBA 506 403/4).

The following additional deviation applies to EN 300 403-1 for the Basic Access

REQ 08

3.5.1 Restart procedures

(EN 300 403-1 Section 5.5 item a)

.

The network is not aware of the configuration on a point-to-multipoint interface.

Therefore Restart procedures are not supported on a point-to-multipoint basic

access. Any RESTART messages on these interfaces will be ignored

REQ 09

3.5.2 Receiving a STATUS message

(EN 300 403-1 Section 5.8.11)

During the broadcast phase for point-to-multipoint configurations the call state used

by the network will be the "individual" call state and not the "global" call state.

Furthermore actions taken in the broadcast phase will be taken on behalf of the

individual processes. I.e. if during the broadcast phase the action specified is to

initiate call clearing with a RELEASE COMPLETE message, the network will act

as if a RELEASE message was received from that specific terminal.

REQ 10

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3.6 Appendix A: Functional changes compared toTINS edition 4

The technical changes between TINS edition 4 and edition 4.4 (SE73) are listed in

Appendix A in chapter 4 (LZBA 506 403/4).

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3.7 Document history

Amendments Revision Date

Original document A 1998-12-15

In clause 3.4 a reference has been added to the

new chapter 6B (LZBA 506 403/6B).

In addition, some editorial changes have been

made.

B 2000-04-26

C 2001-05-04

Modified company name.

New document template.D 2004-02-25