Nov. 21, 2015
11:46 a.m.
On 20/11/15 22:57, Ryan Delgrosso wrote:
1: Stop using port 5060. Pick some other port for your phones to listen on locally. Do the same thing on your access-edge SBC's (this will also pay dividends in ALG avoidance). 2: Find the CPE option to restrict inbound to only the registered proxy. As mentioned before this might be different for each device make but it is unquestionably the best solution.
3. Some phones (like snom) expect invites with a line=xxxxx in the first line. No line ID, no ringing. INVITE sip:5060 at 192.168.2.174:35778;line=3vosp6yi SIP/2.0 -- Tim Bray tim at kooky.org | +44 7966 479015 | http://www.kooky.org Huddersfield, UK