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Intermittent issue: User experiencing dead air while receiving inbound calls.

Intermittent issue: User experiencing dead air while receiving inbound calls.

Intermittent issue: User experiencing dead air while receiving inbound calls.

 

 

CUCM Version :9.1.2.10000-28

 

Phone model impacted: 9971

 

Old firmware : sip9971.9-3-2-10

New Firmware :  9971.9-4-1SR1

 

Call flow :-

 

880-561-9332  ---  nortel pbx 710-921-6950) forwarded to 6851 (TP) ----  MGCP GW  ---- cucm ---- hunt group 9001  --- > 6810

 

User was having random phone reboot issue and user upgraded  firmware on 3 9971 phones on which user is experiencing this issue.

 

Note: These 9971 phone has 2 expansions module and they just go blank every 2 to 3 weeks. When we unplug the patch cable and plug it back again it works.

 

any solution.....any bugs?

1 REPLY
New Member

Issue got fixed by upgrading

Issue got fixed by upgrading the phone firmware to a customized one along with a Jabra headset.

 

Issue was on the Plantronic headset, i would say.

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