How do I activate the handsfree mute button on Norstar M7310? When I push outside line, then handsfree, I get dial tone, but cannot dial outside number. When call is incoming, after answering, I cannot hit handsfree to transfer from receiver to handsfree. Handsfree button gives dial tone only. If I dial another internal extension, handsfree rings, but the other party cannot hear me. Any help would be greatly appreciated.

Set "prime line" to "intercom" in config.

Go to 7310 set you wish yo program leave handset on hook push feature star 3 then the button you wish to program then feature and
the code you want ex:feature 0 is speed dial that key will now be
programmed for speed dial. You cant program line keys or intercom keys.

Check your button programming using Feature *0 to see if the lines are programmed to your phone.

Intercom button/s provide dial tone when they are pressed. They are required to call other phones on your system.
Sounds like your button is stuck or issue with the motherboard.

You will need to enable it in programming. Access programming by dialing Feature **266344, then using 266344 for your password. Your password may be different. Contact your phone company for more details. Scroll to "General Admin". Scroll to "Permissions". Enter set number. The first option is "Full handsfree:N" Press CHANGE to set it to "Y". Scroll to HF Answerback and adjust it to "Y" to complete the process. Press Rls to exit programming.

If handsfree is enabled on your telephone, any line or intercom button activates the handsfree, if you press the handsfree button after selecting the line then the button activates handsfree mute, Press the handsfree mute button again to un-mute the line.

If you have a hansfree/ mute button (green button on the lower right) pressing the handsfree a second time mutes the mic. pressing the handsfree button again activates the mic

The button for handsfree is the same button for Mute.
So when you are on the handsfree call, press the handsfree button again and the call is muted on your side.

To talk again, press the handsfree button to un-mute the call, then press it again to mute your call.

To hang up press the orange RLS button.

Its the problem from the system.

Go to the programming of Norstar by Feature **266344 and the password is 266344.
Go to line datd or line and make dialling made as Tone.
It will fix ur problem.

Rushy: I assume you have a KSU which controls the entire system. The KSU is cabled to each line number provided by your local phone company. Once you have this line established it now makes contact with your phone set via dedicated cabling to each telephone set.. With all this hardware in place you can now program the line keys on each set for either one touch dialing or line access for your dial tone. Program guides can be aquired through GOOGLE by entering " Norstar m7310 program guide".Thank You. Jerry