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This section describes the types of port boards that the Avaya
S3400 Message Server supports.
Types of port boards that S3400 supports
Port boards, also known as line interfaces, terminate bearer trunks
and facilitate signal transfer. In the Avaya S3400 Message Server,
port boards reside in the Messaging Application Server (MAS). A
single S3400 system can have one or more MASs. Each MAS in a single
system may support different port boards. Typically, all port boards
in a single MAS must be of the same type, that is, Tip/Ring, Digital
Set Emulation (DSE), T1, or E1.
Tip/Ring boards
For voice connectivity, the S3400 Message Server uses Dialogic
4-port and 12-port Tip/Ring (T/R) boards. Each of these boards supports
up to four fax ports, and the specific voice encoding/decoding algorithm(s).
Digital Set Emulation boards
When you use the S3400 Message Server with certain switches, the
DSE board provides the switch integration and eight telephony ports.
Firmware settings on the DSE board indicate the specific switch
set that the DSE emulates. The DSE board supports fax on two ports
simultaneously.
T1 and E1 boards
T1 and E1 boards provide high line capacities and improved operational
characteristics. For S3400, the T1 boards provide common channel
signaling (23+1 PRI) for Q-Signaling (QSIG) switch integration and
the E1 boards provide common channel signaling (30+2 PRI) for QSIG
switch integration. Currently, QSIG is available with Avaya and
Nortel switches.
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