[VoiceOps] Issues with ISPs blocking SIP 5060 - 5061

[Matthew Crocker]

I have my SBC configured to listen on port 5060 and a couple other non-standard ports.   When a customer ISP or firewall ALG gets in the way I configure them to use the other ports.    It is pretty easy to add additional ports to the sip-interface of your acme packet SBC

-Matt
--
Matthew S. Crocker
President
Crocker Communications, Inc.
PO BOX 710
Greenfield, MA 01302-0710

E: matthew at crocker.com
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On Nov 21, 2013, at 12:32 PM, Matt Yaklin <myaklin at g4.net> wrote:

> 
> 
> On Thu, 21 Nov 2013, Jay Hennigan wrote:
> 
>> On 11/21/13 5:36 AM, J. Oquendo wrote:
>> 
>>> "Getting the carrier..." We try not to inherit
>>> any of the network unless we are managing it. This frees us
>>> from any liabilities associated with say a Doctors office
>>> doing some whacky VPN to a hospital or other. Would take us
>>> too long to perform a network assessment, and make sense of
>>> a client's business needs, especially for free.
>> 
>> It's a balancing act, to be sure.  Your customer will of course say that
>> the rest of the Internet works fine, it's just your VoIP service that is
>> failing.  "I can get to Google and Yahoo, so there's nothing wrong with
>> my Internet, but your phone doesn't work."
>> 
>> For one-off remote phones, setting SIP transport to TCP is often a good
>> workaround by the way.
>> 
> 
> Will tunneling the sip/rtp packets be more common in the near future
> for SIP phone providers?
> 
> matt
> 
> 
>> --
>> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
>> Impulse Internet Service  -  http://www.impulse.net/
>> Your local telephone and internet company - 805 884-6323 - WB6RDV
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