SIP Calls Direct Media Path?

[VoIPP]

If you match the codecs on a SIP call and IP phone will the call take a Direct Media Path between the IP Phone and the SIP provider or do the packets always have to bounce of the IPO?

 

[amriddle01]

It doesn't do DMP but it does cut over to RTP relay so no VCM is used



"No problem monkey socks

 

[VoIPP]

In 9.0 it apparently does support DMP RTP.

https://avaya.my.salesforce.com/sfc...d/069a0000003PdCYAA0?doc_type=Reference Guide

New SIP Trunk Capabilities

Direct Media on IP Office 500v2 Platform
Direct media allows all IP endpoints to send RTP directly to each other rather than having all media flowing through the IP Office. This reduces network and VCM utilization for more optimized implementations.

 

[amriddle01]

I have R9 running in the office and at home, I have SIP registered to the office system so I can test that Monday, must have missed that in the feature list....or forgot about it which is more likely



"No problem monkey socks

 

[VoIPP]

I started reading the 9.0 features just after posting and came across that.

What I really would be interested to know is if you use a VPN phone and make a SIP call with Direct MediaPath enabled, do the RTP packets traverse the VPN and then go out corporate network? Or does the VPN phone connect to the SIP provider outside of the VPN?

 

[Westi]

I would think that the VPN path takes priority otherwise your remote firewall would then have to enable the incoming port being mapped to the phone and that is harder to do than just leaving the system as RTP relay and not having to worry about it.

Joe W.

FHandw, ACSS (SME), ACIS (SME)

http://convergednetworks.ca

“Quality is never an accident; it is always the result of high intention, sincere effort, intelligent direction and skillful execution; it represents the wise choice of many alternatives.”

 

[VoIPP]

I would think that a VPN phone would route RTP over the VPN as well as I would think everything would default to the VPN.

Here's another question: What if you had a remote office connected with a VPN/Router-Appliance and phones using just H.323. I would think that DMP would function in this scenario.

 

[tlpeter]

You still need the signaling so it will hot the IPO and then to the provider.
If not then no speech.


BAZINGA!

I'm not insane, my mother had me tested!

 

[VoIPP]

tlpeter,

Are speaking of VPN Phones or in all cases?

Are saying the singling has to bounce off the IPO but the voice packets are direct then?

 

[Westi]

RTP can go direct if there is network connectivity and it is enables but signaling is always kept in the IPO because otherwise the IPO will lose control of the call and you can't transfer, conference or even status the call in SSA

Joe W.

FHandw, ACSS (SME), ACIS (SME)

http://convergednetworks.ca

“Quality is never an accident; it is always the result of high intention, sincere effort, intelligent direction and skillful execution; it represents the wise choice of many alternatives.”