IP Audio Hairpinning 1

[learn2shoot]

I am new to the forum and new to the industry.

The organization I work for purchased an Avaya 8710 server, NICE Call Recording, and CMS (r13) Reporting Software. I am the System Administrator for all three. My training consisted of the usernames and passwords I would be using to administer the whole thing.

My question is this (and I have tried reading the manual) What is IP Audio Hairpinning? Is this connected to call recording? What should I set this to?

Thanks
Bill

 

[randyb19]

Welcome to the forum!

A quick summary, with hairpinning turned on, two IP devices (phones) can talk to each other without PBX resources being involved. This is not good if you wish to record the audio, which means you'll need all the audio of the phones to pass through the same data switch that the PBX is connected. Thus, with hairpinning turned off, no matter what kind of call is made from the phone, the audio will always involve the PBX, thus you can sniff the audio packets from the data switch.

Also, on page two of the station form in the PBX, make sure to set "IP-IP Audio Connections" to 'N'. It's right above the hairpinning field.

Hope this helps.

 

[bsmo]

randyb19,

Sorry but you are wrong. You are referring to shuffling (ip-ip direct audio) which under normal circumstances should be on 'Y'. But be carefull, there are reasons you would put this on 'N'. For example if you are using a voice recorder that is sniffing the medpro port instead of using CTI based recording or you want to limit the number of firewall rules.

Hairpinning decides if the speech goes thru the TDM bus or only thru the medpro. With hairpinning on 'N' all voice streams coming in and going back out the medpro will use TDM resources (timeslots). If you put hairpinning to 'Y' the voice streams will still come in and go out the medpro's but without using any timeslots. Therefore hairpinning should be always enabled if possible.