Cisco SIP Phone 3951 can't send DTMF

Unanswered Question
Apr 7th, 2010

Hi Everybody,

My UC System includes the following:

  • 02 CUCM 6.1 Cluster
  • 01 Unity Connection 2.0
  • 01 Voice Gateway 3825 with 12 FXO
  • Cisco IP Phone 7911
  • Cisco SIP Phone 3951

Cisco IP Phone 7911 do inbound and outbound call very well. But only Cisco SIP Phone 3951 can't send DTMF when meet Auto-attendants of Internal system (Unity Connection) and External System ( PSTN). I upgraded latest firmware for SIP Phone 3951 but still no lucks. Please give me some advises !

Thanks and best regards,

Tien Thanh

I have this problem too.
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nguyentienthanh Wed, 04/07/2010 - 09:32

Hi Aaron,

I did it many times but have no lucks. Thank for fast reply.

Regards,

Tien Thanh

nguyentienthanh Thu, 04/08/2010 - 02:50

Hi all,

Who had experience about Cisco SIP Phone 3951 helps me plz ! My boss is angry with me.

Regards,

Tien Thanh

toormehdi Wed, 07/21/2010 - 08:03

Hi,

I am having similar problem. were you able to resolve it?

Any help would be appreciated.

thanks,

Toor

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