Owner`s manual

PN 88300150
4/3/01 88
V.25bis Mode AT Commands
The following commands either alter standard V.25bis behavior (so you must be careful in their use) or
they are not allowed, as indicated. All other commands can be used in V.25bis operation.
A Not Allowed
A/ Not Allowed
A: Not Allowed
D Not Allowed
D...N Not Allowed
$D Alters Operation ($D1 in V25bis is direct call mode)
E Alters Operation
&F Alters Operation (removes modem from
asynchronous V.25bis mode)
N Not Allowed
N...N Not Allowed
O Not Allowed
P Not Allowed
T Not Allowed
U Not Allowed
W Not Allowed
X Alters Operation (X0 no connect message)
(X1 connect message)
, Not Allowed
; Not Allowed
! Not Allowed
@ Not Allowed
+++AT<CR> Not Allowed
V.25bis Responses (Result Codes)
When in V.25bis mode (the AT$V1 command executed), your modem provides you with several
responses which helps you follow the progress of V.25bis operations. These are similar to the Result
Codes associated with AT Command mode operation. The V.25bis responses are in the form of three-
character mnemonics as listed on the next page:
INC Incoming Call (same as RING indicator)
VAL A valid V.25bis command has attempted
DLCt Call delayed for t minutes (number on Delayed list)
CFlrr Call failure indicator where rr equals:
et - Engaged tone (same as BUSY)
nt - Call Answered but No Answer Tone
ab - Call Not Answered
fc - Number on Forbidden List
ns - Number not stored in memory
ua - User Abort
nd - No Dialtone
ff - Forbidden List full
LSNmm;dd...dd Phone number in V.25bis memory