Adtran 924e PRI to SIP

[answerphone]

Greetings,

I know it is possible to use this device as a gateway from SIP to PRI, but what about the reverse?  We have legacy PRI's in the building and our new phone switch can only take SIP trunks (asterisk bases).  I saw a post about a sample configuration for this but was unsure if this would work with this model 924e.

Is there a configuration that could work with this?  Our phone carrier is actually using 2 PRI's, so the config would need to reflect that.  I am having high hopes that this is possible.

Thank you,

Edward

[Anonymous · Accepted solution]

Hello,

Yes this is possible.

I threw this together hopefully I didnt typo or miss anything:

interface t1 0/3

  tdm-group 1 timeslots 1-24 speed 64

  no shutdown

interface t1 0/4

  tdm-group 1 timeslots 1-24 speed 64

  no shutdown

interface pri 1

  description pri 1

  role user

  connect t1 0/3 tdm-group 1

  no shutdown

interface pri 2

  description pri 2

  role user

  connect t1 0/4 tdm-group 1

  no shutdown

isdn-group 1

  connect pri 1

isdn-group 2

  connect pri 2

voice trunk T01 type isdn

  description "PRI1"

  connect isdn-group 1

voice trunk T02 type isdn

  description "PRI2"

  connect isdn-group 2

voice trunk T03 type sip

  description "PBX"

  sip-server primary [IP of PBX]

voice grouped-trunk PRITRUNK

  trunk T01

  trunk T02

  accept $ cost 0

voice grouped-trunk PBXTRUNK

  trunk T03

  accept $ cost 0

[answerphone · Accepted solution]

Your config looks great!  I'm trying to figure out a way to test it out as a proof of concept now that it's up.  Thank you for the help.

[jayh]

Add to Unified's configuration to prevent random ticking sounds and slanted faxes:

timing-source t1 0/3

timing-source t1 0/4 secondary