Lucent Technologies Lucent Network Gateway Fascicule

Lucent Network Gateway

  

Features

• Bearer protocol agnostic

• Wireline/wireless packet codec support

• Standardized protocols and open
  interfaces support

• 21,000+ VoIP or VoATM channels,
  fully protected

• 80,000+ TDM channels,
  fully protected

  

Benefits

• High density
  
• Multi-protocol, mutli-application

• Open, scalable

• Latency-free TDM switching

• Complete range of packet and
  legacy interfaces

  Applications

• Class 5 end office, Class 3 or 4
  tandem switching

• Simultaneous legacy and IP access
  support

• Media Gateway for GSM and UMTS
  Radio Access Network

• 3GPP/3GPP2 IMS Media Gateway

  Technical Specifications

1. Protocol Support

   • ITU-T H.248, IUA, LAPD, CAS (FG-D, Line Signaling)

   • RTP/UDP/IP/GigE or ATM; ATM UNI, AAL2 and AAL5

2. Bearer Support

   •

 TDM: G.711, u-law and a-law

   • IP/ATM: G.711, G.726, G.729a, G.723.1, Clearmode, AMR, EVRC*

   • Echo: G.168, G.164, G.165, up to 128ms tail

   • Silence suppression/comfort noise generation

   • Fixed and adaptive jitter buffer

   • Standard and custom announcements

   • Call progress tones

   • Support of bearer path packet duplication for a CALEA/LI and handover solutions

   • Ability to interconnect with a CALEA/LI server via supported interfaces

3. Capacity

 

  • 21,504 VoIP or VoATM channels, fully protected

   • 80,640 TDM channels, fully protected

4. Redundancy and Availability

   • 1:N redundant Voice over Packet server modules

   • 1:N redundant TDM I/O modules (electrical)

   • 1+1 TDM I/O modules (optical)

   • 1:1 Ethernet I/O modules

   • 1+1 ATM AAL2 modules

   • 1:1 System Processor modules

   • 1:1 Switch Fabric modules

The Lucent Network Gateway is the media gateway component in Lucent’s IP 
MultiMedia Subsystem (IMS) Portfolio. As the cornerstone of the converged 
network, it seamlessly and economically merges the traditional PSTN with 
proliferating IP networks. Because it is bearer protocol agnostic, 
the Network Gateway supports a wide variety of wireline and wireless 
applications. Converged applications may be combined in the same gateway 
enabling TDM, ATM and IP access along with traditional TDM trunking to 
the PSTN/GSTN. The Network Gateway also provides wireless access to 
the Radio Access Network for both a GSM (A interface) and UMTS 
(Iu-CS interface) wireless system and may also be used in a 3GPP R5 
environment as the media gateway for an IP Multimedia Subsystem.