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New Member

Listen to radio dispatch traffic on IP phones

Customer has a request to allow IP phone users (possibly dozens)to listen to live radio dispatch at any time. Only connection from the dispatch system is an analog output. E&M port to FXS port? Multicasting?

Thanks,

9 REPLIES
Cisco Employee

Re: Listen to radio dispatch traffic on IP phones

Hi!

Using a soundcard in the CUCM server you could set up a Music On Hold server which plays a radio stream to callers while on hold.

You would need to connect a radio using a standard audio cable to the soundcard which will then be able to stream the music into your network.

But if you are looking to listen to the readio at any time from the IP phone speaker, this is not possible.

HTH, if it does, please rate.

Regards,

Teresa.

Regards, Tere. If you find this post helpful, please rate! :)

Re: Listen to radio dispatch traffic on IP phones

I think 'impossible' is a little strong in this case. I seem to remember some options within the IP Phone Services SDK about receiving multicast audio to the speaker through a Phone Service, although that would require quite a bit of development. It is possible that this might be an option through Berbee's Informacast or IpCelerate's IpServer products.

VIP Super Bronze

Re: Listen to radio dispatch traffic on IP phones

Just to add two other options into the mix:

Syn-Apps.net has several good products in this arena. I'm not sure if they provide this exact solution though.

Any time I hear 'radio/dispatch' I think of Cisco IPICS:

http://www.cisco.com/en/US/prod/collateral/ps6712/ps6718/product_data_sheet0900aecd8034fd94_ps6724_Products_Data_Sheet.html

New Member

Re: Listen to radio dispatch traffic on IP phones

I am in contact with the customer about whether they think it worthwhile to look in the IPICS direction. Thanks for yourr input...

Re: Listen to radio dispatch traffic on IP phones

Multicasting should be the way to go. The config below takes an audio stream from an E&M port and converts it to an IP multicast.

voice-port 1/0/0

connection trunk 111

music-threshold -30

operation 4-wire

!

dial-peer voice 1 voip

destination-pattern 111

voice-class permanent 1

session protocol multicast

session target ipv4:237.111.0.0:22222

ip precedence 5

To connect to the audio multicast stream you should be able to write a basic IP service using the RTPMRx URI

Multicast Streams

Choose an option

Stream One

RTPMRx://237.111.0.0:22222

Useful links:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t8/feature/guide/ft_hhip.html#wp1005920

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/all_models/xsi/5_0_2/english/programming/guide/ip502ch3.html

Please rate if helpful

New Member

Re: Listen to radio dispatch traffic on IP phones

Thanks for your info. It was very helpful. I now have a few ways to approach this scenario. I was also in contact with SingleWire (Berbee) about possible solutions and might have a way to go with an external USB MOH adapter and a phone service. SingleWire doesn't support it but they know it works.

Again thanks for your input.

New Member

Re: Listen to radio dispatch traffic on IP phones

Hi Jamesha,

I wanted to ask if there was anything important in the 'voice class permanent' config. You didn't add that to your example....

Thanks

Re: Listen to radio dispatch traffic on IP phones

Hi,

When I was putting together the reply I just cut and pasted the config from here.

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t8/feature/guide/ft_hhip.html#wp1013245

When I have set this up in the past I did not need the voice-class permanent command.

New Member

Re: Listen to radio dispatch traffic on IP phones

Got it, thanks. I'm going to study the doc in depth. I see the voice class commands, might as well put it in there. Does the virtual interface (vif1)need a specific IP address or just on a different subnet?

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