Andrew Zhilenko
Guest
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 Posted:
Mon Oct 17, 2005 11:00 pm Post subject:
Re: SIP and end-to-end |
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Hello,
| Quote: | Common wisdom says that for a SIP-based telephony session the media
stream is directly end to end.
However, for both FWD and sipgate.de I figured that the media stream
goes via the respective provider. I would assume the sip proxy to
manipulate the Invite messages accordingly.
Is this being done to better cope with NAT devices and firewalls?
Exactly. For instance see PortaSIP User Guide, "NAT traversal" chapter for |
more details.
http://www.portaone.com/resources/docs/PortaSIP/m-r-11/PortaSIP_User_Guide_MR11.pdf
With best regards,
Andriy Zhylenko
--
Andrew Zhilenko
Please remove "hide-email." from my email address when replying,
so my address should be andrew (at) ti dot cz |
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