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Beginner

Cisco 7940 to SIP

I have got a Cisco 7940. I want to use it with SIP account. Can you help me to insert the SIP firmware?

5 REPLIES 5
Enthusiast

Re: Cisco 7940 to SIP

You can delete it in CUCM (since it's currently a skinny phone) and readd it as a sip phone.  After that, you will likely have to do a factory reset on the phone.  You do that by power cycling it and holding down the # key.  Wait for the lights to cycle on the Headset, Mute and Speaker buttons.  Once the lights are cycling, press buttons 1, 2, 3, 4, 5, 6, 7, 8, 9, *, 0, # in that order.  The phone will reset it's config, contact the DHCP server and start to download the firmware image from CUCM.

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Beginner

Re: Cisco 7940 to SIP

I do not have call manager...I have only the phone....

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Beginner

Re: Cisco 7940 to SIP

No help for me?

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Beginner

Re: Cisco 7940 to SIP

HELPPPPPPPPPPPPPPPPPPPPPPPPP!

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Beginner

Re: Cisco 7940 to SIP

Hi

I recently bought a brand new 7940G phone off ebay from a registered Cisco person who also supplied me the SIP firmware files so I can convert the phone to SIP because I am donating it to a charity and setting up a new network for them and running 3CX phone.  From all the things I read it should be possible.  This should help you Stefano but I still have not completed it to a working state so hope someone else can help too.

  • I unzipped the firmware files (which have to be downloaded by someone who has a contract with Cisco - fair enough)
  • I  setup a DHCP Server on my Windows Small Business Server Essentials 2011 server and set the option to 66 for the TFTP server. 
  • Following 3CXPhone advice I used Pumpkin TFTP Server and installed this on my laptop.
  • I rebooted the phone and it loaded the first two files OK.  These were

OS79XX.TXT and

SEPMacaddress.cnf.xml

Here is the log file from Pumpkin



[05/21/12 23:39:11] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:39:11] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:39:12] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:39:12] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:39:41] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:39:41] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:39:42] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:39:42] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:40:11] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:40:11] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:40:12] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:40:13] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:40:41] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:40:41] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:40:41] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:40:42] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:41:11] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:41:11] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:41:11] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:41:12] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:41:41] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:41:44] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:41:45] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:41:47] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:42:40] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:42:43] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:42:43] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:42:45] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed
[05/21/12 23:43:13] 'OS79XX.TXT' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:43:16] Transfer of 'OS79XX.TXT' has successfully completed
[05/21/12 23:43:16] 'SEP0018BA722132.cnf.xml' of type 'octet' is requested from 192.168.2.7
[05/21/12 23:43:18] Transfer of 'SEP0018BA722132.cnf.xml' has successfully completed

The phone said "Loading software" (from memory)

On the phone I got an error that said something along the lines of "TFTP Size error P003-07-5-00" (from memory)

Then it just continued looping as shown above.

Can anyone please help me by suggesting what I can try next.  I have burnt the midnight oil on this for the last week or so and really do not want to give up and buy dearer phones.  Interestingly I bought a Yealink SIP phone and it worked within one minute on the 3CXPhone IP PBX which is running on the Small Business Server.

Maybe I should have bought the 7940 already changed to SIP!

Mark

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