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Wed 03 of Dec, 2008 [06:07 UTC]

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SIP outbound proxy

Created by: oej,Last modification on Fri 07 of Jan, 2005 [00:04 UTC] by dougmeredith

SIP Outbound proxy - the way out


From the SIP RFC:



Outbound Proxy: A proxy that receives requests from a client, even though it may not be the server resolved by the Request-URI. Typically, a SIP ua is manually configured with an outbound proxy, or can learn about one through auto-configuration protocols.



The outbound proxy is a normal SIP proxy. You configure your client, the phone or software, to use the proxy for all SIP sessions, just like when you configure your Web browser to use a Web proxy for all Web transactions. In some cases, the outbound proxy is placed alongside the firewall and is the only way to let SIP traffic pass from the internal network to the Internet.

The outbound proxy used by a UA can be automatically set with DHCP (this applies to SIP devices mostly, not SIP softphones). There are also autodiscovery solutions, but not frequently used.

See also

  • SIP proxy
  • SIP redirect server
  • RFC 3361: IPv4 Dynamic Host Configuration Protocol (DHCP-for-IPv4) Option for Session Initiation Protocol (SIP) Servers
  • RFC 3319: IPv6 Dynamic Host Configuration Protocol (DHCPv6) Options for Session Initiation Protocol (SIP) Servers



Comments

Comments Filter
222

333SwissVoice IP10s problems

by Ratko, Saturday 10 of May, 2008 [01:32:23 UTC]
Hi. I have problems with IP10s phones. I'm using them on Cisco CallManager 3.1 and when I try to dial number out of the IP network (ex. PSTN or GSM), the phone rings twice and then it hangs up. Can somebody tell me how to resolve this?
222

333About the swissvoice 10s phones

by sash_sokolov, Saturday 26 of May, 2007 [10:18:22 UTC]
I have the same phones but they are using H323 protocol and i want the upgrade them so to be able to use SIP, Can you tell me please what file i need and if you have would you please send it to me , bcs we have a whole box of phones and they are useless now. When we change the protocol with SIP we will be able to test them in our sip server and i will tell you about how to configure them later so they to work
Thanks.. My mail is ssokolov@abv.bg
222

333About the swissvoice 10s phones

by sash_sokolov, Saturday 26 of May, 2007 [10:04:56 UTC]
I have the same phones but they are using H323 protocol and i want the upgrade them so to be able to use SIP, Can you tell me please what file i need and if you have would you please send it to me , bcs we have a whole box of phones and they are useless now. When we change the protocol with SIP we will be able to test them in our sip server and i will tell you about how to configure them later so they to work
Thanks.. My mail is ssokolov@abv.bg
222

333SwissVoice IP10s unable to find proxy

by , Thursday 03 of February, 2005 [16:34:31 UTC]
I have recently upgraded a couple of IP10s to have the "latest" SIP s/w on, however I keep getting "Unable to find proxy server".
This is my first attempt in trying to get IP10's working and its quite painful. Are there any config file I need to include that contain the domain/zone ?