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ADTRAN 1200051L6 User Manual

Page 129

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Appendix D: S-Register List

61200051L1-1D

ISU 2x64 Dual Port ISDN Service Unit User Manual

115

S54.......PROTOCOL

Rate adaptation protocol type.

TYPE

1 = Clear Channel (no rate adaptation) (default)
2 = BONDING mode 1
3 = SAP (Simple Asynchronous Protocol)
4 = T-link
5 = V.110
6 = V.120
9 = DSU 57.6 kpbs asynchronous
11 = FALLBACK
12 = PPP

S55.......DIAL MODE

Selects dialing interface.
0 = Front panel only (dialing from front panel is al-
ways available) (default)
1 = RS-366 dialing port
2 = AT commands
3 = V.25 bis dialing

S56.......ECHO TONE

Enables an echo tone which suppresses the echo can-
cellers in a voice circuit. Can be used to trick the
switch to allow sending data over a line optioned for
voice ISDN service.
0 = None (default)
1 = Answer
2 = Originate
3 = Both

S57.......DDS TEST

Allows an ISU 2x64 optioned as a leased line unit to
respond to either DDS inband latching loopback and/
or V.54 loopback commands.
0 = No Rem Lpbks
1 = DDS Accepted
2 = V.54 Accepted (default)
3 = DDS + V.54 Accepted

S58.......CALL SCREENING

Allows the ISU 2x64 to screen incoming calls.
0 = Answer any call (default)
1 = Answer only calls from numbers matching
those stored in SN0 through SN9.

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