I have a AAstra 6753i phone behind a NAT and a PBX hosted on a public IP. I am able to register another SIP device but not this phone. Need help to setup phone and extension properly so that port registration occurs on a dynamic port and not 5060.
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Hello dear sir, i have a lot experience with asterisk PBx and i hope my skills can be useful for configuring your AAstra phone. Please contact me if you interested in. Thanks.
I'm a professional with experience of over 10 years in management of Linux platforms, information security, Cisco equipment, asterisk and web applications
Certificates: ASTERISK DCAP, LINUX LPI, RED HAT RHCSA, CCNA and CCNP, CEH EC-Council
To solve the problem we should check the confiruation of the voip phone - it should have both nat and local ips, the same as phx. After that we should check tcpdump to see what does phone sends to pbx, and it will help us to solve the issue. Please contact me if you nead my help. Regards,
Natalia