Description; Figure 5-1 Peer-To-Peer One Ip To Tdm - NEC Univerge SV9100 Manual

Figure 5-1 Peer-to-Peer One IP to TDM

1.2
5-2
The GPZ-IPLE is required for connections between IP terminals and

IP trunks. A maximum of one GPZ-IPLE can be accommodated per
system with a maximum of 256 DSP Resources per system.

Description

The GPZ-IPLE board is an optional interface package for converting the Real
Time Transfer Protocol (RTP) packets on the IP network to PCM highway. IP
telephones are connected directly to the IP bus. When IP telephones are required
to be connected to conventional PCM based digital circuit, the GPZ-IPLE board
converts IP packet signals. The GPZ-IPLE provides the digital signal processors
(DSPs) for IP stations and trunks.
A DSP provides format conversion from circuit switched networks (TDM) to
packet switched networks (IP). Each voice channel from the circuit switched
network is compressed and packetized for transmission over the packet network.
In the reverse direction, each packet is buffered for de-jittering, decompressed,
and sent to the circuit switched network. Each DSP converts a single speech
channel from IP to TDM and vice versa.
The following are examples of DSP allocation.
Calling from an IP phone to a TDM phone uses one DSP.

Calling from an IP phone to another IP phone that is registered to the same

CPU uses no DSPs.
Calling from a TDM phone to a TDM phone uses no DSPs.

Issue 2.0
SV9100 IP K-CCIS