Avaya S8700 Maintenance Manual page 111

MODEM-PT (Modem Pool Port)
Integrated Modem Pools
There are two primary types of Modem Pool conversion resources available: an
Integrated Pooled Modem and a Combined Modem Pool. The integrated TN758
Pooled Modem circuit pack contains two independent 300- or 1200-bps
conversion resources. Each conversion resource contains two interfaces to the
PBX digital network: an analog port and a digital port. The analog port is
connected through the PBX network to the analog line or trunk port containing the
analog modem signals. The digital port connects through the PBX network to the
digital line or trunk port in the call. The figure below shows a typical end-to-end
connection using a conversion resource on the integrated Pooled Modem circuit
pack.
TERMINAL
TELEPHONE
NETWORK
MODEM
HOST
COMPUTER
Figure 8-23. Typical Modem Pool Switched Connection with Integrated
555-233-142
DATA MODULE
DCP
POOLED MODEM
CONVERSION
RESOURCE
CENTRAL OFFICE
TIP/RING
ANALOG
ANALOG
Pooled Modem
DIGITAL
DCP
LINE
(TN754)
DIGITAL
DCP
PORT
ANALOG
PCM
PORT
(TN758)
PCM
TRUNK
(TN747B)
Issue 1 May 2002
PBX
DIGITAL
NETWORK
8-807