Hello all! Please bear with me as I’m new to FreePBX and IP Telephony in general.
Two days ago I received 4 Cisco 7940 IP Phones. I have converted two of them to SIP and have configured them each with an extension in FreePBX, but strangely enough, every time I try to make a phone call from Phone 1 to Phone 2, the phone I’m calling from says the other is busy (just a busy tone for a few seconds, then it disconnects) even though both phones are sitting right next to me and the other is not in use.
Can anybody offer any advice on where to start troubleshooting?
Thank you in advance for any/all help you can offer!
Sorry for the late reply. I had originally created the Phones’ extensions using the “None (virtual extension)” option. I recreated the extensions using CHAN SIP and it now says “This device uses CHAN_SIP technology listening on 0.0.0.0:5060” but I still get the dial tone on both lines no matter what. Any ideas? I appreciate all your help.
So, in the example above 192.168.0.1 is the FreePBX IP address.
I get a few errors with my phones as well, the Error Parsing Config type errors - somewhere must tell you what it’s having trouble parsing but I’ve never worried too much about it as I have all the functionality I need.
Can you dial any of the internal features to FreePBX, say *60 for the speaking clock?
Also, if you go to Asterisk Info > Chan_SIP or Peers do you see the extensions actually registering?
Sorry about the late reply–we were having other technology issues. I copied your sip[mac].cnf file exactly and modified it to fit my environment–still no dice. I noticed that, when I run the command “sip show peers”, it says both phones are offline. What line1_authname are you using? I’m starting to think it’s actually an authentication problem; maybe I’m using the wrong username/password combo?
I am new to SIP sorry for bothering you as i have same Cisco 7940G phone but i am having a hard time converting them to SIP. If you dont mind can you please tell me how you converted your phones to SIP if you can provide me with those files if you have them on you would be highly appreciated.
If you would consider an alternative game plan, you might consider adding “chan-sccp-b” to your system and leaving the phones as SCCP (Skinny) phones. With a couple of exceptions (places where people have deliberately set up services as “SIP Only”, mostly) the performance of the phones in SCCP mode is excellent. I wrote the FreePBX Wiki page on the Chan-SCCP-b website and I maintain it regularly.
It’s not “plug and play” and it is also not something you can maintain through the GUI (the old SCCP Manager I wrote is just too full of security flaws to make it a workable solution) but once you get the hang of setting up the configuration, it’s actually pretty simple to keep going.