TA 924 Analog SIP Trunk

[voiptek]

Greetings,

I m beating my head against the wall with this one folks.

We have deployed a TA 924 to a customers site. It is termination for a SIP trunk established on our SBC. Here is how it flows.

Inbound call to DID >INVITE SBC > SBC INVITES Softswitch > Softswitch INVITES service port > service port invites public resource (public wan IP) on SBC > SBC Invites the TA 924 > TA924 Voice Trunk to FXO ports

Everything works, with exception to the voice ring-group. When I dial the ring group number, it rings linear to the first unit and then the next. However, when I try to pick up the call, I get a dial tone.

Here is the config.

hostname "Example"

enable password woot

!

clock timezone -8

!

ip subnet-zero

ip classless

ip routing

!

!

ip domain-name "xxxxxx"

ip domain-proxy

ip name-server  4.2.2.2 10.0.58.10

!

!

no auto-config

!

event-history on

no logging forwarding

no logging console

no logging email

!

no service password-encryption

!

username "admin" password "xxxx"

!

banner motd #

==============================================================

| This network is for the use of authorized users only.      |

| Users (authorized or unauthorized) should have no explicit |

| or implicit expectations of privacy.  Individuals using    |

| this network system without authority, or in excess of     |

| their authority, are subject to having all of their        |

| activities on this network monitored, recorded, and        |

| disclosed by system personnel. In the course of            |

| monitoring individuals improperly using this network,      |

| or in the course of system operation or maintenance or     |

| for the purpose of protecting the rights or property of    |

| the system provider, the activities of authorized users    |

| may be monitored, recorded, and disclosed. Anyone using    |

| this network expressly consents to such monitoring,        |

| recording, and disclosure and is advised that if such      |

| monitoring reveals possible evidence of criminal activity, |

| system personnel may provide the resulting evidence to     |

| law enforcement officials.                                 |

==============================================================

#

!

!

ip firewall

no ip firewall alg msn

no ip firewall alg mszone

no ip firewall alg h323

!

!

!

!

!

no dot11ap access-point-control

!

!

!

!

!

!

!

!

!

!

qos map QMAP_LAN-IN 10

  match list ACL_OUTGOING-TO-WAN-TRUSTED-SUBNETS

  match list ACL_SRC-PROTO-xxxx-RTP

  set dscp 46

qos map QMAP_LAN-IN 20

  match list ACL_OUTGOING-TO-WAN-TRUSTED-SUBNETS

  match list ACL_SRC-PROTO-xxxxx-SIP

  set dscp 26

!

qos map QMAP_WAN-OUT 10

  match dscp ef

  priority unlimited

qos map QMAP_WAN-OUT 20

  match dscp af31

  priority unlimited

!

!

!

!

interface eth 0/1

  description WAN

  ip address  192.168.44.22  255.255.255.0

  access-policy PCLASS_WAN-ZONE

  media-gateway ip primary

  traffic-shape rate 10000000

  qos-policy out QMAP_WAN-OUT

  no awcp

  no shutdown

!

!

!

!

!

!

interface fxs 0/1

  no shutdown

!

interface fxs 0/2

  no shutdown

!

interface fxs 0/3

  no shutdown

!

interface fxs 0/4

  no shutdown

!

interface fxs 0/5

  no shutdown

!

interface fxs 0/6

  no shutdown

!

interface fxs 0/7

  no shutdown

!

interface fxs 0/8

  no shutdown

!

!

!

!

!

!

!

!

!

ip access-list extended ACL_DST-PROTO-VOXOX-RTP

  permit udp any  any range 2000 20000

!

ip access-list extended ACL_DST-PROTO-VOXOX-SIP

  permit udp any  any range 5060 5090

!

ip access-list extended ACL_INCOMING-FROM-WAN-TRUSTED-SUBNETS

  permit ip xxxxxx  any

  permit ip xxxxxxxxxxxx  any

  permit ip xxxxxxxxxxxx  any

  permit ip xxxxxxxxxx  any

  permit ip xxxxxxxxxxxx  any

  permit ip xxxxxxxxxxxxx  any

!

ip access-list extended ACL_OUTGOING-TO-WAN-TRUSTED-SUBNETS

  permit ip any  xxxxxxxxxxxxx

  permit ip any  xxxxxxxxxxxxx

  permit ip any xxxxxxxxxxxxx

  permit ip any  xxxxxxxxxxxxx

  permit ip any  xxxxxxxxxxxxx

  permit ip any  xxxxxxxxxxxxx

!

ip access-list extended ACL_PERMIT-ICMP

  permit icmp any  any

!

ip access-list extended ACL_SRC-PROTO-xxxx-RTP

  permit udp any range 2000 20000 any

!

ip access-list extended ACL_SRC-PROTO-xxxxx-SIP

  permit udp any range 5060 5090 any

!

!

ip policy-class PCLASS_WAN-ZONE

  allow list ACL_INCOMING-FROM-WAN-TRUSTED-SUBNETS self

!

!

!

ip route 0.0.0.0 0.0.0.0 192.168.44.1

!

no ip tftp server

no ip tftp server overwrite

ip http server

ip http secure-server

ip snmp agent

no ip ftp server

no ip scp server

no ip sntp server

!

!

snmp-server community public RO

!

!

!

!

ip sip

ip sip udp 5060

no ip sip tcp

!

!

!

voice feature-mode network

voice flashhook mode transparent

voice forward-mode network

voice call-appearance-mode single

voice conferencing-mode local

!

!

!

voice spre 1 *XX

!

!

!

!

voice dial-plan 1 local NXX-NXX-XXXX

voice dial-plan 2 long-distance 1NXX-NXX-XXXX

voice dial-plan 3 international 011[]

!

!

!

!

voice codec-list VOXOX_Default

  default

  codec g722

  codec g711ulaw

  codec g729

!

!

!

voice trunk T01 type sip

  description "VoIP Trunk To xxxxx"

  sip-server primary xxxxxx

  dial-string source to

  codec-group xxxx_Default

!

!

voice grouped-trunk xxxxTRUNKGROUP

  trunk T01

  accept $ cost 0

!

voice user 12132850798

  connect fxs 0/1

  password "1234"

  sip-authentication password "1234"

  codec-group xxxxx_Default

!

voice user 12132850799

  connect fxs 0/2

  password "1234"

  sip-authentication password "1234"

  codec-group xxxxx_Default

!

voice ring-group 8001

  type linear

  description Main Ring Group

  num-rings 3

  max-inbound 8

  did "12132850889"

  member 12132850798

  login-member 12132850798

  member 12132850799

  login-member 12132850799

  no prefix

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

ip sip grammar request-uri host domain

ip sip grammar from host domain

ip sip grammar p-asserted-identity host domain

ip sip grammar to host domain

!

!

!

ip rtp udp 19560

ip rtp symmetric-filter

!

ip sdp grammar hold rfc3264

!

!

line con 0

  no login

!

line telnet 0 4

  login local-userlist

  password xxxxx

  no shutdown

line ssh 0 4

  login local-userlist

  no shutdown

!

sntp server xxxxx

!

!

!

!

end

So, the only thing I cannot configure correctly is the voice ring-group. Both phones ring if in "ring all" type or linear, but when the call is picked up, the phone provides a dial tone.

Any and all assistance is very highly appreciated.

[Anonymous · Accepted solution]

Voiptek,

Thanks for posting!  Below is an example of the supported configuration for a hunt/ring group on a Total Access 900 series.

voice forward-mode local

!

voice dial-plan 1 extensions 2000X

!

voice user 1001

  connect fxs 0/1

!

voice user 1002

  connect fxs 0/2

!

voice user 1003

  connect fxs 0/3

!

voice ring-group 6351

  type linear

  num-rings 4

  member 1001

  login-member 1001

  coverage internal 20002

  coverage internal 20003

!

voice ring-group 20002

  type linear

  num-rings 4

  member 1002

  login-member 1002

!

voice ring-group 20003

  type linear

  num-rings 4

  member 1003

  login-member 1003

In this example, 6351 is inbound dialed number that goes into the linear hunt group.  The important details would be that only one voice user is applied to each ring group, all calls start with a primary ring group, and the other ring groups are reached via a coverage statement within the primary ring group.  "Ring all" ring groups are not supported on the Total Access 900 series, so any feature like that would need to be handled on the SIP server.  For further information regarding this configuration, reference Configuring Hunt Groups in SIP IPBGs. Feel free to respond to this email with any questions you may have.

Thanks!

David

[Anonymous]

Voiptek,

I went ahead and flagged the "Correct Answer" on this post to make it more visible and help other members of the community find solutions more easily. If you don't feel like the answer I marked was correct, feel free to come back to this post and unmark it and select another in its place with the applicable buttons.  If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.

Thanks,

David