How to Configure CISCO 7945G phone with 3CX

[krishnaranjit.d]

Could any one please help me how can i configure my recently purchased (used) Cisco 7945G to work with 3CX server.

I don't have a Cisco UCM. i used TFTP for uploading SIP firmware to phone. It looks like phones firmware is changing but not sure which firmware need to use and which one will be suitable for 3CX compatible.

If the firmware updates to compatible SIP then what is the procedure to configure my phone to work with 3CX.

Please help me in this regards

Thanks in advance.

[Leo Laohoo]

I'm not familiar with 3CX solution but the same "rules" apply.  You need the following files: 

1. Phone firmware; 
2. SEPmacaddress.cnf.xml;
3. Dialing pattern; 
4. TFTP server; and 
5. DHCP Option 150

[Dennis Mink]

you would really need to post this on the 3CX forum.

I would think, that with 3CX, you would need to put the ip address or hostname of the SIP registrar into the phone together with a username and password, that is typically how you register SIP phones on Asterisk as well.

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