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TA 904 2nd Gen incoming calls

I have a basic configuration with SIP provider via eth 0/1 and a PRI connected with a PBX.

The unit is installed behind a NAT router with the public IP 108.X.X.X.

I can't receive incoming calls and in debug I get:

12:50:10.688 SIP.STACK MSGSUM  Tx: REGISTER sip:64.XX.XX.XX:6060 SIP/2.0

12:50:10.710 SIP.STACK MSGSUM  Rx: SIP/2.0 200 OK

12:50:11.102 SIP.STACK MSGSUM  Rx: INVITE sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0 (with SDP)

12:50:12.305 SIP.STACK MSGSUM  Rx: INVITE sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0 (with SDP)

12:50:12.906 SIP.STACK MSGSUM  Rx: CANCEL sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0

12:50:12.941 SIP.STACK MSGSUM  Rx: INVITE sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0 (with SDP)

12:50:13.509 SIP.STACK MSGSUM  Rx: CANCEL sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0

12:50:13.741 SIP.STACK MSGSUM  Rx :INVITE sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0 (with SDP)

12:50:14.711 SIP.STACK MSGSUM  Rx: CANCEL sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0

12:50:14.944 SIP.STACK MSGSUM  Rx: INVITE sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0 (with SDP)

12:50:15.545 SIP.STACK MSGSUM  Rx: CANCEL sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0

12:50:15.647 SIP.STACK MSGSUM  Rx: INVITE sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0 (with SDP)

12:50:15.719 SIP.STACK MSGSUM  Tx: REGISTER sip:64.XX.XX.XX:6060 SIP/2.0

12:50:15.741 SIP.STACK MSGSUM  Rx: SIP/2.0 200 OK

12:50:16.147 SIP.STACK MSGSUM  Rx: CANCEL sip:973NNNNNNN@108.X.X.X:1954;tgrp=idxxxxx SIP/2.0

I can make outgoing calls.

This is the configuration

ip subnet-zero

ip classless

ip default-gateway 192.168.254.1

ip routing

!

!

ip domain-proxy

!

!

!

no ip firewall alg msn

no ip firewall alg mszone

no ip firewall alg h323

!

no dot11ap access-point-control

!

interface eth 0/1

  ip address  192.168.254.39  255.255.255.0

  media-gateway ip primary

  no shutdown

!

!

!

!

interface t1 0/1

  shutdown

!

interface t1 0/2

  description Mitel PRI

  tdm-group 1 timeslots 1-24 speed 64

  no shutdown

!

!

interface pri 1

  description pri 1

  isdn name-delivery setup

  connect t1 0/2 tdm-group 1

  role network b-channel-restarts disable

  no shutdown

!

isdn-group 1

  connect pri 1

!

timing-source internal

!

ip route 0.0.0.0 0.0.0.0 192.168.254.1

ip route 192.168.254.0 255.255.255.0 192.168.254.1

!

!

ip sip

ip sip udp 5060

no ip sip tcp

!

!

voice feature-mode network

voice forward-mode network

!

!

voice dial-plan 1 local NXX-NXX-XXXX

voice dial-plan 2 long-distance 1NXXXXXXXXX

!

!

voice codec-list Main

  codec g729

  codec g711ulaw

!

!

!

voice trunk T01 type sip

  description "Intermedia SIP"

  sip-server primary 64.X.X.X udp 6060

  registrar primary 64.X.X.X udp 6060

  authentication username "idxxxxx" password "1234"

  max-number-calls 10

  register 1 auth-name "idxxxxx" password "1234"

  codec-group Main

!

voice trunk T02 type isdn

  description "PRI to Mitel"

  resource-selection circular descending

  connect isdn-group 1

  rtp delay-mode adaptive

!

!

voice grouped-trunk SIP

  trunk T01

  accept NXX-NXX-XXXX cost 0

  accept 1-NXX-NXX-XXXX cost 0

  accept 1-800-NXX-XXXX cost 0

  accept 1-888-NXX-XXXX cost 0

  accept 1-877-NXX-XXXX cost 0

  accept 1-866-NXX-XXXX cost 0

  accept 1-855-NXX-XXXX cost 0

  accept 411 cost 0

  accept 611 cost 0

  accept 911 cost 0

  accept 1-900-NXX-XXXX cost 0

  accept 1-976-NXX-XXXX cost 0

  accept NXX-976-XXXX cost 0

!

!

voice grouped-trunk "PRI TO MITEL"

  trunk T02

  accept NXX-NXX-XXXX cost 0

  accept 1-NXX-NXX-XXXX cost 0

  accept 1-800-NXX-XXXX cost 0

  accept 1-888-NXX-XXXX cost 0

  accept 1-877-NXX-XXXX cost 0

  accept 1-866-NXX-XXXX cost 0

  accept 1-855-NXX-XXXX cost 0

  accept 411 cost 0

  accept 611 cost 0

  accept 911 cost 0

  accept 1-900-NXX-XXXX cost 0

  accept 1-976-NXX-XXXX cost 0

  accept NXX-976-XXXX cost 0

!

end

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Honored Contributor

Re: TA 904 2nd Gen incoming calls

Your debugs show the INVITE coming from a 108.X.X.X address. Your unit isn't configured to accept SIP from this IP. Can you modify the settings of the NAT router to not manipulate the source address? I assume that the INVITE is originating from the 64.X.X.X Intermedia SIP server, correct?

Alternatively, configure a SIP trunk T03 with the SIP server of whatever 108.X.X.X address your NAT router is using for origin. It shouldn't need to register or need a grouped-trunk if only incoming calls appear from that address.

I would strongly advise against putting the TA900 behind a NAT device. Doing so generally results in some form of random breakage. Put it on a public IP address. Stuff like you're seeing now, one-way audio, etc. will drive you batty.

For your PRI TO MITEL grouped-trunk, it's probably best to only accept the DID range(s) assigned to the PBX instead of everything. You definitely don't want that trunk accepting 911 (unless it is at a PSAP which I doubt). You also probably don't want any trunk accepting 1-900-NXX-XXXX or 1-976-NXX-XXXX or NXX-976-XXXX.

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New Contributor

Re: TA 904 2nd Gen incoming calls

64.X.X.X is the SIP server and 108.X.X.X is my public IP.

This is only an evaluation unit and that is the reason some stuff is left in the programming.

I know that by connecting it to the public IP will work, but I was looking to see if it is a place where like with other devices,

you can enter the public IP address, to be used for this setup.

Your suggestion to setup another SIP trunk is very clever but looks that at least in the call setup phase, is using two SIP connections.

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New Contributor

Re: TA 904 2nd Gen incoming calls

I found the solution.

I put the public IP address in voice trunk T01 ( my SIP trunk) for the domain.

voice trunk T01 type sip

  domain "108.X.X.X"

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