Description Page 55 of 910
IP Line Description, Installation and Maintenance
Figure 4
ITG-P 24-port card physical assembly

Functional description of the Voice Gateway Media Cards

The Media Card and ITG-P 24-port line cards can perform two separate
functions, depending on the system in which the card is located:
1The card acts as a gateway between the circuit-switched voice network
and the IP network.
2The card acts as a Line Terminal Proxy Server (LTPS) or “virtual line
card” for the IP Phones, based on whether a Signaling Server is used in
the configuration or not.