Northern UTA220/UTA220k Manuel D’Utilisation
UTA220/UTA220k
6-5
V.25 bis Dialer Operation
Incoming Call Indication: INC
Upon receiving an incoming call, the UTA220 sends the DTE
an Incoming Call Indication (INC). Only one indication is
given per call. If the auto-answer option is on, the UTA220
will answer the call after the number of rings designated by the
S0 command.
an Incoming Call Indication (INC). Only one indication is
given per call. If the auto-answer option is on, the UTA220
will answer the call after the number of rings designated by the
S0 command.
Response Messages
A response message is sent by the UTA220 immediately after
it receives a V.25 bis command message. Response messages
are shown in Table 6-2.
it receives a V.25 bis command message. Response messages
are shown in Table 6-2.
Table 6-2: Response Messages
Character
Function
VAL
Valid Command.
INV
Invalid Command. Command is invalid or inappropriate.
INVCU
Command Unknown. Transmission error (parity, framing)
occurred.
occurred.
INVMS
Invalid Message Syntax. Command is too long; command contains
invalid characters.
invalid characters.
INVPS
Invalid Parameter Syntax. Wrong number of parameters;
parameter contains invalid character or too many characters.
parameter contains invalid character or too many characters.
INVPV
Invalid Parameter Value. Parameter is out of range or is null.
CFIAB
Call Failure, Call Aborted.
CFICB
Call Failure, Local DCE busy.
CFIDT
Call Failure, No Dial Tone.
CFIET
Call Failure, Busy.
CFINT
Call Failure, No Answer Tone.
CFIRT
Call Failure, Connect Time-out.
CFI
Call Failure, Reason Unknown.