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7-12 Preliminary May 9, 2000 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide
Configuring T1 Cards
Configuring inband robbed-bit signaling
accounting. (On lines configured for PRI signaling, this information is presented as part of the
call setup message and does not require special configuration on the TAOS unit.)
To configure the TAOS unit to process the DTMF digits in a call, use the
Collect-Incoming-Digits and DSP-DTMF-Input-Sample-Count parameters in a T1 profile.
The Collect-Incoming-Digits parameter enables the TAOS unit to process the DTMF digits in
a call. The DSP-DTMF-Input-Sample-Count parameter specifies the number (one or two) of
Goertzel input samples that the TAOS unit computes to decode a DTMF digit. A setting of
Two-Samples creates a more accurate result.
To configure a T1 line for inband (robbed-bit) signaling, proceed as in the following example:
1 Read in the T1 profile:
admin> read t1 {1 2 1}
T1/{ shelf-1 slot-2 1 } read
2 List the Line-Interface subprofile:
admin> list line
enabled=no
frame-type=d4
encoding=ami
clock-source=eligible
clock-priority=middle-priority
signaling-mode=inband
robbed-bit-mode=wink-start
default-call-type = digital
collect-incoming-digits = no
dsp-dtmf=input-sample-count=one-sample
..
..
3 Enable the line:
admin> set enabled = yes
4 Specify inband signaling:
admin> set signaling-mode = inband
5 Specify the Robbed-Bit-Mode:
admin> set robbed-bit-mode = wink-start
6 Specify call type:
admin> set default call type = voice
7 If you are using DNIS or CLID authentication, set the TAOS unit to process the DTMF
digits and specify the sample size used to decode the digits:
admin> set collect-incoming-digits = yes
admin> set dsp-dtmf-input-sample-count = one-sample
8 Write the profile to save the changes:
admin> write
T1/{ shelf-1 slot-2 1 } written