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dmitrinik
Beginner

Multicast Robbed-bit signaling

Hello everyone,

Is it possible to Multicast Robbed-bit signaling?

The configuration bellow allows me to bridge three voice-ports always on connection within one gateway, but unable to transmit robbed-bit signaling. It works great with p2p connection. Any ideas anyone?

controller T1 0/2/0

framing SF

linecode ami

cablelength short 133

ds0-group 0 timeslots 1 type e&m-immediate-start

ds0-group 1 timeslots 2 type e&m-immediate-start

ds0-group 2 timeslots 3 type e&m-immediate-start

!

voice-port 0/2/0:0

timeouts call-disconnect 3

connection trunk 1000

!

voice-port 0/2/0:1

timeouts call-disconnect 3

connection trunk 1001

!

voice-port 0/2/0:2

timeouts call-disconnect 3

connection trunk 1002

!

dial-peer voice 1000 pots

destination-pattern 1000

port 0/2/0:0

!

dial-peer voice 1001 pots

destination-pattern 1001

port 0/2/0:1

!

dial-peer voice 1002 pots

destination-pattern 1002

port 0/2/0:2

!

dial-peer voice 6 voip

destination-pattern 1001

session protocol multicast

session target ipv4:237.11.0.11:22222

codec g711ulaw

vad aggressive

!

dial-peer voice 7 voip

destination-pattern 1002

session protocol multicast

session target ipv4:237.11.0.11:22222

codec g711ulaw

vad aggressive

!

dial-peer voice 5 voip

destination-pattern 1000

session protocol multicast

session target ipv4:237.11.0.11:22222

codec g711ulaw

vad aggressive

!

Thank you all.

3 REPLIES 3
paolo bevilacqua
Hall of Fame Master

Voice multicast (hoot'n holler) is a special configuration that only works for the designed application. It is not done simply configuring "session protocol multicast". Refer to the configuration guid.

http://www.cisco.com/en/US/docs/ios/12_2/voice/configuration/guide/vvfhhip.html

Paolo, thank you for the link, but it does not give me a clear answer to my question. My Cisco T1 interface is connected to a turret T1 interface system with speakers and microphone. Turret has separate key to send signaling (ABCD bits = 0000). The configuration that I have already allows me to talk over three channels on a turret, but signaling does not work. Can you please provide configuration example to set this up? Thank you.

I can only refer you to the configuration examples in the document, some of which it seems to me that you are missing.

Also, I think that Hoot'n holler will not transport signalling, but just media under the very specific application requirements.

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