[SIPForum-discussion] SIP port 5060 blocked

[Irwin Lazar]

We¹ve had a similar problem, we have a SIP-based IP Centrex service which is
bundled with our Internet access.  Our provider blocks port 5060 for all
traffic other than communications between our phones and their servers, so
we are unable to use any other SIP-based applications which use 5060 (the
well-known port for SIP message exchange).  This has killed our ability to
use Apple¹s iChat AV since it also relies on port 5060.

Strangely enough I¹ve discovered that Gizmo Project, which is a SIP-based
Skype-like phone service, does not use 5060, rather they use UDP port 64064.

Irwin

-- 
Irwin Lazar, CISSP
Senior Analyst, Burton Group
ilazar at burtongroup.com
Phone: 703-742-9659
AIM/Gizmo/Google/MSN/Skype/Yahoo: imlazar
SightSpeed: ilazar at burtongroup.com




From: Dixen Fernandez <dickie_bird2k2 at yahoo.com>
Date: Tue, 2 May 2006 09:20:23 -0700 (PDT)
To: <discussion at sipforum.org>
Subject: [SIPForum-discussion] SIP port 5060 blocked

Dear forum members ,
  
 
  
I am based in Oman and recently our ISP has blocked the common SIP port
5060. I use a hell a lot of VoIP using the SIP based services and I feel
crippled now . 
  
 
  
In the meanwhile , I have informed my SIP - VoIP service providers also and
they are also finding out a solution for SIP users.
  
 
  
I would like to know , what are the commonly used SIP ports and is there any
software to scan the unblocked SIP ports by my ISP.
  
 
  
Your information on this topic is highly appreciated .
  
 
  
Dixen.


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