Voice Over IP Phone - Physical Device Cisco IP PHONE 7940

Unanswered Question
Oct 19th, 2009

Hi Every body,

This is to announce in the forum , I have alot trouble facing in the IP Phone .

This is causing my production & Client interaction Problems. my Network has 2 Mpbs Leased line I have around 10 IP Phones and only 3 three are critical, In my network stability and the switch environment is also good but when i have all IP Phones are working in sudden one IP Phone the model Cisco IP Phone 7940 series makes reboot every day atleast 7 to 8 times .Do you think the IP Phone required separate Leased line provided or can we manage the environment with out fail by adding any additional component like powerful intelligent switch.Please reply back this query , it is an urgent issue in my environment.

I have this problem too.
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Paolo Bevilacqua Mon, 10/19/2009 - 04:36

If phone freeze, it's a firmware bug.

Which firmware are you running ?

Please do not solicit for urgent answer on a free volunteered forum, if you need guaranteed support buy a contract.

ajay_bhard2002 Tue, 10/20/2009 - 21:32

Hi p.bevilacqua,

You said it is true . Can you guide how do i upgrade my VoIP Firmware?

Please Update me ASAP.



Paolo Bevilacqua Wed, 10/21/2009 - 05:31

You need to buy a support contract to download new phone firmware.

then the procedures are descibed in the documentation.


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