Paradyne COMSPHERE 3920Plus Technical Reference Manual page 253

S-Register
S33 Mixed Trib F/W. Mixed tributary firmware. Establishes that a multipoint network
has modems using mixed firmware (prior to and after Release M02.00xx).
Register has the following values:
0 = No
1 = Yes
The factory setting is No.
S35 SDC Negotiation. Controls negotiation between two modems attempting to
connect using SDC.
Register has the following values:
0 = LAPM_Buffer
1 = LAPM_Discon
The factory setting is LAPM_Discon.
S36 SDC Idle Fill. Synchronous Data Compression idle fill.
Register has the following values:
0 = Flag_Fill
1 = Mark_Fill
The factory setting is Flag_Fill.
S37 SDC Bit Encoding. Synchronous Data Compression bit encoding.
Register has the following values:
0 = NRZ
1 = NRZI
The factory setting is NRZ.
S38 Trellis Multipoint (TMp) Tx Preemphasis Value. Controls amplification for
frequencies above the carrier frequency to compensate for high-frequency line
attenuation. The higher the value, the greater the amplification.
Enter a value from 0–F (hex).
The factory setting is 5.
S39 Gain Hit Threshold. Determines the maximum gain hit rate that will be
tolerated without shifting down the line rate.
Enter a value from 0–127. The factory setting is 10.
S40 Automatic Make Busy. Register determines if the modem goes off-hook under
certain conditions. This register should only be enabled when the modem is
located behind a user's Private Branch Exchange (PBX). This register is only
valid for Model 3921Plus modems.
Register has the following values:
0 = Disable
1 = Enable
The factory setting is Disable.
3920-A2-GH30-40
Table 14-3
(5 of 15)
392xPlus S-Registers
Description
October 1998
AT Command Set and S-Registers
DCP LCD
Command
Sequence
Configure\Edit\
Misc
Configure\Edit\
V42/MNP/Buffer
Configure\Edit\
V42/MNP/Buffer
Configure\Edit\
V42/MNP/Buffer
Configure\Edit\
Lease Line
Configure\Edit\
Leased Line
Configure\Edit\
Line Dialer
14-21