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New Member

Delay to signal line

Hi ,

When i took the phone off the hook, the signal delay about 4 seconds , but only the models 7940 and 7970, if i use the speakerphone everthing works.

I have CCME 4.0. Could be a bug?

I´ve already updated de firmware of these phones models.

Tks

  • IP Telephony
1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Red

Delay to signal line

Hi Thiago,

This is almost certainly a hardware problem with the Hookswitch. After deploying Cisco IP Phones for the last few years we (and many others) have found this to be the most common hardware problem. There is a "Best Practice" for cleaning the Hookswitch contacts (link below) that does work . Usually the phone has to be replaced/RMA'd.

If you don't have smartnet on the phone and you want to buy the parts to fix this let me know and I'll send a link

BestPractices for Cleaning and Troubleshooting Cisco IP Phone Hookswitch

From this interesting Tech note;

http://www.cisco.com/en/US/products/hw/phones/ps379/products_tech_note09186a00801c0810.shtml

Cheers!

Rob

"May your heart always be joyful And may your song always be sung May you stay forever young " - Dylan
5 REPLIES
Hall of Fame Super Gold

Delay to signal line

Check hookswitch may be stuck or in need of cleanining.

New Member

Delay to signal line

Hi Paolo,

Sorry for my ignorance, but where can i check the hookswitch?

Tks

Hall of Fame Super Red

Delay to signal line

Hi Thiago,

This is almost certainly a hardware problem with the Hookswitch. After deploying Cisco IP Phones for the last few years we (and many others) have found this to be the most common hardware problem. There is a "Best Practice" for cleaning the Hookswitch contacts (link below) that does work . Usually the phone has to be replaced/RMA'd.

If you don't have smartnet on the phone and you want to buy the parts to fix this let me know and I'll send a link

BestPractices for Cleaning and Troubleshooting Cisco IP Phone Hookswitch

From this interesting Tech note;

http://www.cisco.com/en/US/products/hw/phones/ps379/products_tech_note09186a00801c0810.shtml

Cheers!

Rob

"May your heart always be joyful And may your song always be sung May you stay forever young " - Dylan
New Member

Delay to signal line

Hi Rob,

Certainly this is the problem, tks !!! Where do you buy the Hookswitch?

I will try these steps too :

http://www.youtube.com/watch?v=B5BSjNKkEWY

TkS!

Hall of Fame Super Red

Delay to signal line

Hi Thiago,

Sorry that I missed your reply

Here we go;

http://www.nascsars.com/products.asp?cat=1297

Cheers!

Rob

"May your heart always be joyful And may your song always be sung May you stay forever young " - Dylan
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