Appendix D: S-Register List

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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ADTRAN ISU 2X64 user manual Type, = Fallback, = Ppp, Dial Mode