COMSPHERE 3800Plus Modems
13-22 October 1998 3980-A2-GB30-40
Table 13-2
(5 of 15)
3800
Plus
S-Registers
AT Command Front Panel BranchDescription
S32 SyncDTE CRC
Determines whether the CRC of the DTE frame is transmitted from modem
to modem.
Register has the following values:
0 = Ignore
1 = CRC16
The factory setting is Ignore.
Configure\Edit\
V42/MNP/Buffer
S33 Buffer Size In Buffer Mode
Limits the amount of data buffered during Buffer Mode operation.
Register has the following values:
0 = Normal (the modem buffers data as usual in Buffer Mode)
1 = Minimized (a minimal amount of data is buffered in Buffer Mode)
Factory setting is 0 (Normal).
S35 Auto Redial
Auto Redial allows repeated automatic dial backup attempts by specifying
the range of Directory Locations that can be tried.
On leased lines with dial backup, Auto Redial (S35) works in conjunction
with the Bad Lines Auto Originate and Rate Auto Originate options. A
redial attempt is made in response to a bad phone number, a busy signal,
no answer, or no quiet answer. The modem must be in Originate mode.
Register has the following values:
0 = Directory Location 1
1 = Directory Locations 1–2
2 = Directory Locations 1–3
3 = Directory Locations 1–4
S S
S S
9 = Directory Locations 1–10
Factory setting is 0 (Directory Location 1).
Configure\Edit\
Leased Line
S36 Rate Auto Originate
Initiates a dial backup call, using the phone number or numbers
determined by S-register S37 when the leased-line rate of the modem falls
back to or below a certain speed.
Register has the following values:
0=Disable
1=On fallback to 4,800
2=On fallback to 7,200
3=On fallback to 9,600
4=On fallback to 12,000
5=On fallback to 14,400
6=On fallback to 16,800
NOTE: Rate Auto-Originate is valid only when V.32bis Autorate is
enabled (S76=0) and when running V.32bis modulation.
Configure\Edit\
Leased Line