PTCL Training & Development1 Introduction To Gateways Media Gateways 2 The function of a media gateway is to adapt user data to the backbone network based on a packet switching technology (IP ). Terminates voice calls from the TDM, compress and packetize the voice data, and delivers the compressed voice packets to the packet network. Receives the voice packets from the packet network, unpacketize and uncompress them, and deliver them to the TDM. Controlled by the Soft switch Media Gateways as Access Gateways (AG) 3 V.24 V.35 E1 POTS ISDN VOIP ADSL ADSL2 HDSL SHDSL LAN The AGW equipment is installed in the Access Network. The Access Gateway (AG) provides narrowband and broadband service access. The AG transfers subscriber line data such as voice, modem and fax across the core network of NGN through media stream conversion. IP/MPLS Media Gateways as Trunking Gateways (TG) 4 Local Exchange Local Exchange MGW Trunk Exchange Speech circuits (TDM) Trunk Exchange IP packets Trunk Media Gateway (TMG) is resident between the circuit switched network and the IP packet switched network. It provides functions of format conversion between pulse code modulation (PCM) signal streams and IP media streams. IP/MPLS Residential Media Gateway (RG) 5 RMG adopts the Voice over IP (VoIP) technology to encapsulate analog voice signals into data packets that can be transmitted over packet-switched network, in order to provide telephone service over global IP network at a very low cost. IP/MPLS Customer Premises 6 IAD: Full Series Products 1-port2-port 4-port8-port16-port 32-port IAD208 Series IAD101A IAD101E IAD102E IAD104E IAD108 Series IAD132E(T) IAD116E-A EPhone video terminal Terminal Capacity ranges from 1 port to 32 Optional FE/ADSL/VDSL uplink Support Fax/Modem Huawei Universal Media Gateway: UMG Large Capacity: 7168 E1, 112*STM-1 (Trunk side) POTS users: up to 1,000,000 V5 users: up to 1,000,000 PRA users: 7,168 (30B+D or 23B+D) BRI users: up to 500,000 Carrier-class reliability design Interfaces: E1/T1/STM-1.FE/GE,ATM STM-1/E3 and POS STM-1/STM-4 Protocol supported:H.248, PRA,R2, SIGTRAN(M2UA,IUA,V5UA) and V5 Local TDM switching function (128K*128K) Connectivity Of Access Gateway in Network 8 Connectivity Of Universal Media Gateway 9 Connectivity Of Trunk + Signaling Gateway 10 Connectivity Of Trunk + Access Gateway 11 Connectivity Of Residential Media Gateway 12 Communication B/W Softswitch & UMG 13