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Davesnothere
No-BHELL-ity DOES have its Advantages
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reply to Arne Bolen

Re: [Voip.ms] Failover options when server down

said by Arne Bolen:

 
CallWithUs is a real good communication provider, especially for business users.

One of the biggest advantages is the direct media from the carrier to the user.

Direct Media improves the audio quality and reduces latency to a minimum. It works like a charm.

said by »www.callwithus.com/faq :

Q. Do you proxy media ?

A. CWU server automatically detects if your SIP device is on a public IP address or NAT traversal solution like STUN is employed in your SIP client, and sets direct audio path with call termination gateways, otherwise audio will be proxied by one of our servers closest to your geographical location.

 
Direct Media - This came up also within the long CallCentric thread, did it not ?

Does this mean that the actual audio data flows directly between the various parties of the call ?

That would soitainly sound to me like less server load for the provider.

Does CallCentric support Direct Media ?

If not, then that would explain a lot about the call quality being poor even after they first set up their alternate SIP registration servers during the attack - if their SIP servers ALSO had to carry the audio content.

Is Direct Media also supported by Anveo, VOIP.MS, and any other of our most discussed VoIPPs here ?


Arne Bolen
Happy Anveo customer
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1 edit
said by Davesnothere:

Direct Media - This came up also within the long CallCentric thread, did it not ?

It's possible, but I can't find it now.

said by Davesnothere:

Does this mean that the actual audio data flows directly between the various parties of the call ?

Yes, the audio flows directly from the carrier to you and it will not pass through a server at CallWithUs.

said by Davesnothere:

That would soitainly sound to me like less server load for the provider.

That is correct. A lot less server load as only the SIP data will pass through the provider server.

said by Davesnothere:

Does CallCentric support Direct Media ?

No.

said by Davesnothere:

If not, then that would explain a lot about the call quality being poor even after they first set up their alternate SIP registration servers during the attack - if their SIP servers ALSO had to carry the audio content.

Correct.

said by Davesnothere:

Is Direct Media also supported by Anveo, VOIP.MS, and any other of our most discussed VoIPPs here ?

Anveo = No

Anveo Direct = Yes (inbound only)

VoIP.ms = No

Voxbeam = Yes

Other of our most discussed VoIPPs here = No, with a few exceptions.

------

Please note that Direct Media often doesn't work for SIP devices behind NAT.
 
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My VoIP News

OZO
Premium
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said by Arne Bolen:

Please note that Direct Media often doesn't work for SIP devices behind NAT.
 

Until you set up STUN server in your SIP device. Then it works well behind NAT...
All my SIP clients (including OBi100 ATA) sit behind their own NATs and all they communicate nicely using external STUN server(s).
--
Keep it simple, it'll become complex by itself...