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Cisco ip 7940 starts to verify the load and the starts to reboot again, this is a used phone that was purchased to replace a phone that was doing the same thing. please advise

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  • 2 Answers

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Posted on Jan 02, 2017

ward_knutson
  • 64 Answers

SOURCE: Converting Cisco 7940 IP Phone to SIP

Unlocking a Cisco 7940

Method 1:
1) Unplug the phone
2) Plug the phone back in while holding the # key
The phone will soon display “Reset key sequence detected”
3) After several lights flash press the following keys in order:
1 2 3 4 5 6 7 8 9 * 0 #
4) The phone will then ask you if you want to save the network configurations:
Save network cfg? 1=yes 2=no
5) The phone will soon display “Factory reset initiated” and will continue
through the boot up process.
If that process fails to work for some reason there
is a second method.

Method 2

Complete these steps:

  1. Press Settings.
  2. The Network Configuration lock symbol must be unlocked. If not, exit to the main window and press ** # again.
  3. Press 3 on the keypad (or scroll down) for Network Configuration.
  4. Press 33 on the keypad (or scroll down) to Erase Configuration.
  5. Press the Yes softkey.
  6. Press the Save softkey.
The phone will now be reset.

Also see this link
http://www.cisco.com/univercd/cc/td/...tain.htm#93250

Posted on Nov 25, 2008

ted1430
  • 339 Answers

SOURCE: Cisco IP Phone 7940 and 3com nbx as 3rd party SIP phones

Here are the instructions for configuring these units for 3cx

http://www.3cx.com/sip-phones/cisco-7940.html

http://www.3cx.com/sip-phones/polycom-soundpoint.html

Since the 3cx softphone worked well, I don't see why you couldn't configure each as for 3cx and make them work as well.

Posted on Jan 09, 2010

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1 Answer

How can I clear / reset a Cisco IP Phone 7910


How to set a Cisco IP phone to factory default Reset configuration of Cisco IP Phone (7910, 1911, 7940, 7941, 7960, 7961)

To set the Cisco IP phone to factory default completes the following steps: should be completed:

For 7940, 7941, 7960, 7961 phones:

1. Power up the phone (unplug power cable and plug in again and hold the # key.
2. Release # when lights start flashing.
3. Press 123456789*0#.
4. Press 1 to keep network configuration or 2 to lose the network configuration.

For 7906G and 7911G phones:
1. Power up the phone (unplug power cable and plug in again and hold the # key.
2. Release # when MWI starts flashing.
3. Press 3491672850*#.

Oct 28, 2010 | Cisco 7910 IP Phone

1 Answer

We are experiencing some NW problems with our Cisco 7940 hardphones. We have several installed and for some time now it seems that these hardphones just lose their default gateway configuration and stop...


I would check the firmware on the phones. Also, check that your switches are properly configured. Duplex settings do matter. If your using cisco switches; do a "show interface" and check for CRC errors etc.

Jun 25, 2010 | Cisco 7940 IP Phone

1 Answer

7940G IP Phone: how to solve the protocol application invalid prob...


Hi

This happens when you IP phone communicated with the Voice vlan with the IP address of data vlan.

To solve it manually enter the IP address of the TFTP server and option 150 on the DHCP server.
remove the voice vlan from the switch port and reboot the phone
again add the voice vlan and reload the phones

May 17, 2010 | Cisco 7940G IP Phone

2 Answers

Cisco IP Phone 7940 and 3com nbx as 3rd party SIP phones


Here are the instructions for configuring these units for 3cx

http://www.3cx.com/sip-phones/cisco-7940.html

http://www.3cx.com/sip-phones/polycom-soundpoint.html

Since the 3cx softphone worked well, I don't see why you couldn't configure each as for 3cx and make them work as well.

Dec 09, 2009 | 3Com NBX 2102PE IP Phone

1 Answer

'in call' volume cisco 7940


The handsets will eventually go bad. If it is every single handset that you have, the problem is with the system. But if the problem is only with a few of your phones, you might consider replacing the handsets. We at IdacomUSA.com have replacement Cisco handsets for sale at only $25. Hope this helps you out :)

1-800-903-9190

Mar 04, 2009 | Cisco 7940 IP Phone

2 Answers

My Cisco ip Phone 7940 will not ring.


Give me your number, and i'll call you! Solved! =-D

Jan 27, 2009 | Cisco 7940 IP Phone

1 Answer

Converting to SIP


connect a crosscable between your cisco 7940 and the laptop
start a dhcpserver and a tftpserver on your laptop
The files i mentioned (SIP license) have to be purchased at Cisco.
start the IPPhone, thats all

Aug 26, 2008 | Cisco 7940G IP Phone

1 Answer

Converting Cisco 7940 IP Phone to SIP


Unlocking a Cisco 7940

Method 1:
1) Unplug the phone
2) Plug the phone back in while holding the # key
The phone will soon display “Reset key sequence detected”
3) After several lights flash press the following keys in order:
1 2 3 4 5 6 7 8 9 * 0 #
4) The phone will then ask you if you want to save the network configurations:
Save network cfg? 1=yes 2=no
5) The phone will soon display “Factory reset initiated” and will continue
through the boot up process.
If that process fails to work for some reason there
is a second method.

Method 2

Complete these steps:
  1. Press Settings.
  2. The Network Configuration lock symbol must be unlocked. If not, exit to the main window and press ** # again.
  3. Press 3 on the keypad (or scroll down) for Network Configuration.
  4. Press 33 on the keypad (or scroll down) to Erase Configuration.
  5. Press the Yes softkey.
  6. Press the Save softkey.
The phone will now be reset.

Also see this link
http://www.cisco.com/univercd/cc/td/...tain.htm#93250

May 18, 2008 | Cisco 7910 IP Phone

1 Answer

My client has Cisco 7940 IP phones and wants assistance with feature programming


This phone can be access through a menu/ setting buttons.

Useful link on how to navigate through the phone:
http://www.cisco.com/warp/public/779/largeent/avvid/products/7940/7940_topic3.htm
I think the main problem is to determine the intergrated router or Call manager configuration
You can also connect on switch and type:show cpd neighbor This will show the physical port connections

Nov 27, 2007 | Cisco 7940 IP Phone

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