9608 IP Phone - No Ring but Flashing LED

[rwallo]

Hello folks

I have some 9608 IP phones with firmware SP 6.2.3 H.323 release on them. There are about 1500 installed on the system. We are having to reboot about 5 per week because they will indicate an incoming call on the LED but do not ring. A reboot of the phone corrects the problem.

I looked through the readme on the latest release for firmware and it didn't mention this issue.

We are monitoring so that we can verify that the audio patch is in fact set for handset and not headset, and, that the ringer volume has not been turned all the way down.

This sounds similar to something I vaguely recall from years ago on the 4600 IP phones but can not remember what the resolution was.

If you have had or have heard of something like this, please share the resolution or any thoughts you have.

Thanks!

[psinghsolank]

Hello Richard,

Can you provide following details:

Are all these phones the agents extensions?
How frequent the issue occurs on a same phone?
Did you tried loading a default 46xx settings file on a phone and monitor it for issue?

Regarding the 4600IP phones, I found the following issue and its resolution:
=====================
Issue: The 4612 or 4624 IP Telephone works properly except the telephone does not ring.

CAUSE: The Ringer Off (RngOF) softkey feature has been activated.

RESOLUTION: Use the softkey Menu option to access the RngOF feature. A downward-pointing triangle means the Ringer is off. Ensure that the triangle points up. Also, check the Volume setting on the telephone. Finally, do a self-test on the telephone.
=====================


You can try upgrading to the latest H.323 6.4 firmware
If has the following issue fix which can be the problem in your case:
"The ringtone volume is also changed whenever the user changes the speaker volume."