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AUX-TRK (Auxiliary Trunk)
Issue 1 May 2002
8-311
555-233-143
An Auxiliary Trunk circuit pack contains four ports and uses DTMF signaling. A
different hardware interface between the switch and the auxiliary equipment is
used for the four types of signaling that the auxiliary trunk circuit pack supports.
The interface used for the MultiVantage loudspeaker paging consists of the
following three pairs:
■
The Tip-Ring (T-R) pair used for voice transmission.
■
The S (S-S1) pair that carries answer supervision and/or make busy
information.
■
The SZ (SZ-SZ1) pair that provides the external equipment with a seizure
indication.
The interface used for recorded announcement, dictation, and other loudspeaker
paging consists of the following two pairs:
■
The Tip-Ring (T-R) pair used for voice transmission.
■
The S (S-S1) pair that carries answer supervision and/or make busy
information.
The interface used for Music-On-Hold consists of one pair:
■
The Tip-Ring (T-R) pair used for voice transmission.
The interface, used for automatic wake-up using an Audichron
recorder/announcer unit, consists of the following two pairs:
■
The Tip-Ring (T-R) pair used for voice transmission.
■
The S (S-S1) pair that carries the synchronization signal.
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...