dial-peer help

[jordan.bean]

We are currently running MGCP and plan to change to H.323 on some of our gateways so that we can TDM switch between PRI's using dial-peers.  Can someone provide an example on how we can achieve the following:

PRI (telco) ----->  Cisco 2811  ------>  H.323 -----> CUCM

                                  |

                                  |

                            PRI (eFAX)

The behavior should be as follows:

1) For calls coming from the telco, route them to CUCM unless a dial-peer is identified that routes the call to the PRI (eFAX)

2) For calls coming in from CUCM, route them to the telco unless a dial-peer is identified that routes the call to PRI (eFAX)

Both CUCM and the telco dial-peers basically need to match all patterns because we have so many DID's on the phone system and they're constantly changing since we're a service provider.

[Thomas Dominic]

Hi Jordan,

This is possible if you have a set of very specific numbers for the Fax system. You would need to create the following for this to work.

• Incoming Dial-Peer, 1 POTS and 1 VOIP
• Out going Dial-Peer's(POTS) to Telco (Seperate for each type of numbers 1 for local, 1 for long distance and 1 for international - basically for each differenr numbering format you would send out)
• Outgoing Dial-Peer (VOIP), 1 per different numbering format send to CUCM.

The below dial-peer's are assuming the NANP(North American Numbering Plan)

• Local - 7 digits, Long distance - 11 digits, International - 13 digits, Emergency - 911
• FAX numbers - 6700 - 6799 (change accrodingly)
• CUCM numbers - (810000 to 819999, send by telco; again change accordingly)

Dial-Peer's

dial-peer voice 1 voip                              (Calls to G/W from CUCM)

incoming called-number .

direct-inward-dial

!

dial-peer voice 2 pots                              (Calls to G/W from Telco or FAX)

incoming called-number .

direct-inward-dial

!

dial-peer voice 3 pots                              (Local calls to Telco)
  preference 1
  destination-pattern [1-9]......

forward-digits all
  port 0/0/0:23
!

dial-peer voice 4 pots                              (Long Distance calls to Telco)
  preference 1
  destination-pattern [1-9]..........

forward-digits all
  port 0/0/0:23
!

dial-peer voice 4 pots                              (International calls to Telco)
  preference 1
  destination-pattern [1-9]............

forward-digits all
  port 0/0/0:23
!

dial-peer voice 5 voip                              (Calls to CUCM from Telco or Fax)
preference 1
destination-pattern 81....

forward-digits all
session target ipv4:10.254.1.10     (CUCM IP)
!

dial-peer voice 5 pots                              (Calls to FAX from Telco or CUCM)
preference 1
destination-pattern 67..
port 0/0/0/1:23

forward-digits all
!

dial-peer voice 6 pots                              (Emergency calls to TELCO)
preference 1
destination-pattern 911
port 0/0/0:23
forward-digits all
!

This is the basic idea, you need to tweak this as per your specific number's but overall this should work.

Regards

Thomas

P.S. Please rate helpful posts

[jordan.bean]

Thanks for the info.  I used your model and setup the following dial-peers.  I don't have any dial-peers setup to route to eFAX yet, but that shouldn't be a problem since the exact DID will be matched.

Do you see any issues with the following setup?  It seems to be working fine in both directions with no delay.

dial-peer voice 1 pots
description Enable DID on calls from PRI's to GW
incoming called-number .
direct-inward-dial
!
dial-peer voice 2 pots
description Calls to Telco (Primary)
preference 1
destination-pattern .T
port 1/1:23
!
dial-peer voice 3 pots
description Calls to Telco (Secondary)
preference 2
destination-pattern .T
port 1/0:23
!
dial-peer voice 4 voip
description Default calls to CUCM Publisher (Primary)
preference 1
destination-pattern .......
voice-class codec 1
voice-class h323 1
session target ipv4:x.x.x.x

dtmf-relay h245-alphanumeric
!
dial-peer voice 5 voip
description Default calls to CUCM Subscriber (Secondary)
preference 2
destination-pattern .......
voice-class codec 1
voice-class h323 1
session target ipv4:x.x.x.x

dtmf-relay h245-alphanumeric
!
dial-peer voice 6 voip
description Default calls to CUCM Subscriber (Terciary)
preference 3
destination-pattern .......
voice-class codec 1
voice-class h323 1
session target ipv4:x.x.x.x

dtmf-relay h245-alphanumeric

[Thomas Dominic · Accepted solution]

Hey, great calls are working without any delay; and the conf looks fine too

Regards

Thomas

P.S. Please rate helpful posts