I am facing a challenge from past 1 week. I have free asterisk freepbx server installed in oracle vm virtualbox. I created 3 extensions, 2 for softphones(x-lite & media5-phone) & 1 for cisco 7940g ip phone. Now extensions work well with softwares and i can call each other without any problems. But cisco ip phone fails to register as i can see in asterisk info peers as host unspecified. i can see this cisco ip phone ip address in asterisk info channel only.
When i run tcpdump i can see some information for this cisco phone ip as icmp udp port 49110/49111 unreachable.
Not sure where it is going wrong! Is it because we need to buy separate module for hardphones like cisco?
Appreciate your help. Thank you.
How can I check asterisk debug/ debug on the phone? I mean where can I find? Please could you assist.
Just 1 more info I missed. When I do tcpdump in asterisk, it shows icmp duo port 49110 unreachable for phone ip.
Soft phones looks OK as no error message.
Actually soft phone, asterisk & Cisco phone are on different vlans with inter vlan routing on. I can see soft phone on different vlan registers ok to asterisk but Cisco phone cannot register.
Thanks & appreciate your help.
What was the ICMP in response to, and in which direction.
If the Asterisk box sent the ICMP for a SIP request, that is right, as Asterisk will be listening on 5060, by default. If it received it when responding to the phone, you have a firewall or NAT problem.
Generally cherry picking symptoms is not helpful. We need to see the complete debugging trace, although it does help if you highlight interesting bits.