[VoiceOps] Issues with ISPs blocking SIP 5060 - 5061

Jay Hennigan jay at west.net
Thu Nov 21 12:41:19 EST 2013

On 11/21/13 9:35 AM, Matthew Crocker wrote:
> 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

Sometimes it isn't the port, but the way the CPE deals with UDP,
especially if there's a NAT or firewall you can't tweak.

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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