Avaya S8700 Maintenance Manual page 110

Maintenance Object Repair Procedure
MODEM-PT (Modem Pool Port)
MO's Name (in
Alarm Log)
MODEM-PT
1. UU is the universal cabinet number (1–64). C is the carrier designation (A, B, C, or D). SS is the
number of the slot where the circuit pack resides (01–10). pp is the 2-digit port number (01, 02,...).
The Modem Pool Port provides an interface for digital and analog data
communication devices or ports connected to the PBX. It may be thought of as a
PBX data communications "conversion resource" because it converts analog
modem signals typically used in the telephone network into digital signals that are
compatible with the internal PBX network and vice versa.
There may be a number of these conversion resources available in the PBX, each
assigned to an available Modem Pool Group. Only one conversion resource is
used per data connection. The PBX software usually adds the conversion
resource into a data connection if it determines that it is necessary for the call.
Typical connections that include Modem Pool conversion resources include data
calls from Analog Line or Central Office Trunk ports to any digital port or Digital
Line or Trunk ports to any analog port. An example of a Data Module to Central
Office Trunk connection using a Modem Pool conversion resource is shown in
Figure 8-23 on page
analog port normally used for voice service only and terminates on a digital port, a
Data Origination access code must be dialed before the extension number for the
Modem Pool conversion resource to be included in the connection.
Each Modem Pool conversion resource contains two ports. One of these, an
analog port, is connected (via the PBX network) to the analog line or trunk port
that is the source of the modem signal. The second port is referred to as the
digital port and is connected (again through the PBX network) to the digital line or
trunk port associated with the Data Module in the connection. The analog modem
signals enter the analog port of the conversion resource in standard Pulse Code
Modulation (PCM) format, but are converted into Data Communications Protocol
(DCP) format before going to the digital line or trunk in the connection.
8-806 Issue 1 May 2002
Alarm
Level Initial Command to Run
MINOR test port UUCSSpp s
8-807. In the case where a local data call originates from an
1
Full Name of MO
Modem Pool Port
555-233-142