V Verbose Mode
This command determines whether messages will be returned as digit codes or as words. Four op-
tions are available:
V or V0
AT codes
This returns standard AT single-digit codes
V1
AT words
This returns standard AT word messages
V2
AT & T-311 codes
This returns two-digit T-311 codes
V3
AT & T-311 words
This returns T-311 word messages
(Default)
X Call Progress Monitoring
This command controls the type of call progress tones the T-311 can detect.
X command settings are stored in Register S*5. To obtain a display of the current X command set-
tings, that is, to determine the current call progress detection capability of the T-311, enter the
command as follows:
AT S*5?<CR>
Call progress Tone Tolerance
Call progress tones must be within the following tolerances:
Busy Tone:
400 - 600 mS on time
Reorder Tone:
200 - 300 mS on time
Ringback Tone:
800 - 2600 mS on time
Note:
The T-311 version of the X command has been extensively modified and expanded from the
standard AT version.
X or X0
Codes 0 - 4
This command enables response codes 0 through 4 (OK, RING, and ERROR, as described in Table
6.) Dial tone and busy signal are not recognized so the T-311 dials without waiting for dial tone.
X1
This command is not applicable in T-311; command will function as X0.
X2
Codes 0—6
This command enables response codes 0 through 6 (OK, RING, ERROR, and NO DIAL TONE). The
T-311 waits for dial tone before it begins dialing and returns a NO DIALTONE message if dial tone is
not detected within 30 seconds (or the time set in S8). Busy signals are not recognized.
X3
Codes 0, 2, 4, 7
This command enables response codes 0, 2, 4, and 7 (OK, RING, ERROR, BUSY, and REORDER).
The T-311 dials without waiting for dial tone and returns a a BUSY message if a busy signal is de-
tected.
T-311
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