Specifications

2-50

Reference Guide

Model No.

Running Head

Low-Bit Rate Voice Server Applications

2.11.1 Call Center Application

In the application shown in Figure 2-31, customer calls originating from the PSTN are

compressed by the LBRV server for efficient transmission on the leased E1 trunk. up to Up to

three LBRV servers are used per IAD to compress up to 192 voice channels from the PSTN

on to the E1 link and still leave 128Kbps bandwidth for data traffic from a router. A Frame

Relay server is used in the IADs’ at the hub locations to send voice and data traffic on the

leased E1 trunk.

Figure 2-31. LBRV in a Call Center Application

HSU

FRS

E1 link = 8 T1 + 128K (Routers)

FRS

HSU

1852 k

128 k

E1Leased

Line

2X64K

PSTN

PABX

3LBRV

2X64K

Router Router