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CUCM 8.0.3.23900-5 6921 firware upgrade

Ayaz Khan
Level 1
Level 1

Hello,

We upgraded two 6921 phones to the latest firmware, SCCP69xx.9-4-1-3SR1.  What we are noticing is, the time is incorrect and it will not downgrade to any other version.  It is currently registered to one of the CUCM, when I attempt to force it to register to another CUCM, through CUCM group.  It won't.  

We tried doing a factory reset, moved it to a different location.  Still no luck.

If anyone has any troubleshooting steps or have encountered this issue before please let me know.

Thanks,

 

AK

1 Reply 1

Aman Soi
VIP Alumni
VIP Alumni

Hi AK,

we had faced the issue of 6921[SCCP]  not working properly  between two lines .

We opened TAC case and suggested to upgrade to above said your version but new issue of timing came UP only on this model and dialing issue got resolved.

Finally , we degraded to SCCP 9-3-1-5-ES5  version  after it was published by TAC engr. and got the issue resolved.

suggest u opening TAC case .

 

regds

aman

 

 

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