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Power
Servicing
Telephone programming
Service Profile Management
•
Loudspeaker Paging
•
Dictation Access and Control
Power for the M5317T telephones is always supplied through the line cord.
The telephones can be configured for either designated (continued service
during local power failures) or non-designated (no service during local power
failures) operation.
Power may be provided from PS1 or PS2 source output of NT1 interface, or
can be provided locally from a sealed alternating current (AC) plug-in
transformer with direct current (DC) output.
Except for the insertion or removal of the data and headset option circuit
board, as noted above, it is not necessary to open the telephone case for field
servicing purposes. The telephone line cord and the handset cord are both
equipped with TELADAPT connectors at both ends, permitting quick
replacement where required. A hatch is provided for access to the dip
switches to permit the selection of the appropriate power supply and of the
"designated" telephone status.
In NI-1 mode, information related to the programmable keys may be loaded
into the M5317T memory from the Integrated Services Digital Line Card
(ISDC) at the switch. This feature loading process will be performed on
request. Currently, only DMS central offices support this service.
Accessibility of features depends on subscription at the switch, and softkeys
for features not subscribed are removed from the display. Not all features
need be provided in every case. Service change routines permit addition or
deletion of features. If no feature loading takes place, the telephone must be
configured manually. Do not confuse this feature loading with the overall
M5317 BRI terminal
Telephones and Consoles
Page 485 of 532
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