Xsm Functionality; Xsm Alternative - Nortel Meridian SuperNode SL-100 Reference Manual

Figure 2-8 XSM configuration in SL-100 environment
Switching Network
LTC/LGC
RCC, RCC2
IPEs with XSM
Note: The XSM does not support dial-up.

XSM functionality

The XSM feature functionality consists of the datalink interface, XSM
configurations and XSM maintenance interface. The SL-100 IPE also
supports an alternative to XSM, described in the "XSM alternative" section.
XSM configurations
The XSM circuit pack is located in the IPE column pedestal. Each IPE column
(IPEC) consists of a stack of up to four IPE modules, numbered from 0 to 3
(bottom to top). IPE modules are numbered according to their physical
locations in an IPEC. One master XSM supports up to 64 columns, including
itself. Thus, one master XSM can support up to 256 IPE modules.
An XSM identification code (XSMID) from 0 to 63 is assigned by setting the
DIP switches on the XSMs. Number 0 is always associated with the master
XSM and the slaves are numbered from 1 to 63.

XSM alternative

For those IPE configurations equipped with XSMs, but do not have RS-232-C
connections to the IOCs, the SL-100 system provides an alarm system that
consists of hardware devices and software modules for detecting and reporting
(by both visual and audible alarms) equipment faults. The hardware comprises
various circuit packs that provide signal scan points and signal distribution
Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
Meridian SL-100 Central Controller (CC)
LTC/LGC
IPEs with XSM
IPE architecture 2-15
Input/Output Controllers
MAP Terminal
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