hello guys good morning

[armelbrizard1]

hello guys how are you i have a question  am trying to configure two cisco ip phone 504g with 3cx  i have created extention in 3cx web console whend i log in using the ip address for the phone i put the extension and ip address for the web server for 3cx  in the cisco web configuration i keep getting fail no response not registered it dosent matter one of the phone both give the error all the time cannot registered i did try facotory  restting the phone keep saying fail no response i think my firmaware version is 7.5.2 please help thank you

[jonrodr2]

Hello,

My name is Jonathan and I am one of the Engineers here at Cisco Small Business.

I apologize for the delay in answering and for any inconvenience with the unit, if you still need help, please let us know the following:

-since the post, have you checked the firmware on the units if the phones have the 7.5.2, i would recommend to do the upgrade as there are several versions ahead of that one already.

-was the phone getting the correct ip range?

-did you test with any other brand of phones?

here is the link for the firmware version in case you need it. thanks

https://software.cisco.com/download/release.html?mdfid=282724650&softwareid=282463651&release=7.6.2SR1&relind=AVAILABLE&rellifecycle=&reltype=latest