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APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide Preliminary May 9, 2000 16-1
16
Configuring STM-0 Cards
Introduction to STM-0
The Synchronous Transport Module (STM)-0 card is an optical 51.85Mbps communication
circuit designed to be used with an approved signaling gateway. Each of its 28 T1 lines can be
configured as Signaling System 7 (SS7) data trunks. When configured as an SS7 data trunk,
the signaling gateway takes control of the data trunks, instructing the TAOS unit when to bring
calls up or down.
Note that the STM-0 card does not support Call-Routing profiles, PRI signaling, or inband
signaling. Figure 16-1 shows an example STM-0 configuration.
Figure 16-1. Example STM-0 configuration
Introduction to STM-0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1
Using STM and T1 profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-2
Sample STM-0 configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-2
Ingress CO
switch
TAOS unit
messaging
interface
Frame Relay,
ATM, or IP
STM-0 data
trunk
ISP A
ISP B
signaling gateway
SS7 Network
TAOS