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:
1Read in the T1 profile:
admin> read t1 {1 2 1}
T1/{ shelf-1 slot-2 1 } read
2List 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
..
..
3Enable the line:
admin> set enabled = yes
4Specify inband signaling:
admin> set signaling-mode = inband
5Specify the Robbed-Bit-Mode:
admin> set robbed-bit-mode = wink-start
6Specify call type:
admin> set default call type = voice
7If 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
8Write the profile to save the changes:
admin> write
T1/{ shelf-1 slot-2 1 } written