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Using Cisco router with 2 CSU/DSU interfaces for B8ZS to AMI conversion

This is going to sound a little strange, but has anyone ever tried to convert a B8ZS/ESF T1 to AMI/D4 using a Cisco router with voice, some DSP voice channels and 2 CSU/DSU interface WICS?

 

I have a legacy phone system that only supports AMI/D4. The T1 from the Telco is B8ZS/ESF. An Adtran CSU is providing the conversion today but we suspect it is failing. I am sure this is possible using a dialing plan, but I have never attempted it. Anyone have any adivce or pointers?

All of our extensions begin with a 2 and are 4 digits long.

This is what I have today:

 

voice-card 0
 dspfarm
!

controller T1 0/3/0
 framing sf
 linecode ami
 cablelength short 133
 ds0-group 1 timeslots 9-16 type e&m-wink-start
 description TDS T1
!
controller T1 0/3/1
 framing esf
 linecode b8zs
 ds0-group 0 timeslots 1-8 type e&m-wink-start
 description Executone

!

voice-port 0/3/0:1
!
voice-port 0/3/1:0
!
!

dial-peer voice 1 pots
 description incoming PSTN voice, PRI
 incoming called-number 2...
 no digit-strip
 port 0/3/1:0
!
dial-peer voice 2 pots
 description incoming voice to Executone
 destination-pattern 2...
 no digit-strip
 port 0/3/0:1
!
dial-peer voice 3 pots
 description outgoing voice, recieved from executone
 incoming called-number ..........
 no digit-strip
 port 0/3/0:1
!
dial-peer voice 4 pots
 description outgoing PSTN voice, recieved from executone
 destination-pattern ..........
 port 0/3/1:0

 

 

 

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