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New Member

Does anyone know how to tie a line on an ATA to a DS0 channel?

Ok so basically what I am trying to do is when you pick up on analog on an ATA-187 it will pick up a DS0 channel on a T-1, if a call comes in on that DS0 channel I want it sent to the line on the ATA.  So no matter what incoming and outgoing calls from the DS0 are sent to only that ATA line regardless of what numbers are pressed, and vice versa attached are the parts of the config.  I have multiple TAC case for this and no luck yet.

This on a 2900 running

Version 15.2(2)T1

CME 9.0

voice service voip


clid substitute name

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

no supplementary-service h450.2

no supplementary-service h450.3

no supplementary-service h450.7

no supplementary-service sip moved-temporarily

no supplementary-service sip refer

no supplementary-service sip handle-replaces

signaling forward rawmsg

fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none


  bind control source-interface Loopback0

  bind media source-interface Loopback0


  registrar server

  transport switch udp tcp

  asserted-id ppi

  localhost dns:houdtnetvoip01

  midcall-signaling passthru

  no call service stop

voice class codec 1

codec preference 1 g711ulaw

voice register global

mode cme

source-address port 5060

max-dn 100

max-pool 110

load ATA ATA187.9-2-3-1.loads

authenticate register

authenticate realm cisco

create profile sync 0003799434644418


voice register dn  1

session-server 1

number 7025555101


label ATA-187


voice register pool  1

id mac C40A.CB4C.9347

type ATA-187

number 1 dn 1

username cisco password cisco

codec g711ulaw


controller T1 0/0/0

framing SF

linecode ami

cablelength long 0db

ds0-group 0 timeslots 1 type fxo-loop-start

interface Loopback0

ip address


voice-port 0/0/0:0

output attenuation 0

connection plar 7025555101


dial-peer voice 5101 voip

answer-address 7025555101

destination-pattern 7025555101

session protocol sipv2

session target ipv4:

codec g711ulaw

supplementary-service pass-through


dial-peer voice 1 pots

destination-pattern .T

incoming called-number 7025555101

port 0/0/0:0

forward-digits all







max-dn 100

timeouts busy 20

system message Company

cnf-file location flash:

dialplan-pattern 1 70255551.. extension-length 4 extension-pattern 51..

max-conferences 8 gain -6

web admin system name cisco secret 5 ******************************

transfer-system full-consult

create cnf-files version-stamp 7960 Apr 19 2012 03:31:21


Everyone's tags (7)
Hall of Fame Super Gold

Re: Does anyone know how to tie a line on an ATA to a DS0 channe

That will be easier if you run the  ATA with SCCP firmware, not SIP.

Then configure intertcom on the corrrpsonding DN, destination will a number that has a DP going out the specified DS0.

New Member

Re: Does anyone know how to tie a line on an ATA to a DS0 channe

Unfortunately, the ATA-187 is SIP only for now.  And the older SCCP ATA's are all EOL.  So currently only option is a SIP ATA as we are not allowed to buy EOL equipment. 

Hall of Fame Super Gold

Re: Does anyone know how to tie a line on an ATA to a DS0 channe

SIP not good for these things. You can use an FXS port, or VG202. But first, do testing with a a regular IP phone.

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