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Beginner

Jabber for iphone and DVO-R

Hi!

I would like to understand if the Dialback procedure as such within DVO-R contains any mediastreams at all or is this all done via SIP signalling?

The reason for asking is to understand which ports that would be required to open in the FW. If no media passes, then we do not need to open for UDP high ports. My understanding is that it should be only SIP and that the media stream is directly between the Jabber on the iphone and the Home PSTN GW that anchors the destination and extends the call to the destination.

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Cisco Employee

Re: Jabber for iphone and DVO-R

You understanding is correct. Only SIP signalling is via the IP path. All the media is routed via PSTN gateway.

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