cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
350
Views
0
Helpful
6
Replies

7821 SIP Phones

GWaldbin
Level 1
Level 1

We have few 7821 SIP phones which suddenly started having problems...these phones will ring continuously  but no one is calling!!! They also lose dial tone!!! Once you reset (power cycle) the phone, they work fine. Has anyone come across same symptoms? Any fixes? Thanks

6 Replies 6

Jaime Valencia
Cisco Employee
Cisco Employee

CME? CUCM? version? FW version?

HTH

java

if this helps, please rate

sorry...CUCM ver 9.1

FW version?

HTH

java

if this helps, please rate

sip78xx.11-0-1-11

I'll see if there are any bugs, do you see something on the screen for this calls??

HTH

java

if this helps, please rate

it seems like happening on 7800 model of SIP phones. Currently, I do not have accurate info on the display but these phones have shared lines. Also, when these symptoms occur, phone is registered in call manager (like a normal) phone but user told us it 'dead'!!! I am assuming they are saying there is no dial tone.