Question about Cisco 7940 IP Phone

1 Answer

Hi,i wanna use cisco ip phone 7940 as sip ip phone.when i power up the phone ,it can get ip from network,but finally,it shows "TFTP timeout"in display led.All the buttons can not be used.What does it mean by"TFTP timeout" What should i do to make it work well.Thank you.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Hi,

the DHCP server should be providing the address of the TFTP Server as DHCP Option 150. The most likely problems are:

Option 150 not defined, or not the correct IP address of the TFTP Server.
Or possibly your TFTP Server is not functioning properly.

If you have not Option 150 defined, the phone will use the default gateway as the TFTP server address.

Cheers, Simmo99.

Posted on Jan 06, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

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

1 Answer

Want to migrate fom sccp to sip protocol for cisco IP Phone 7912


Here's a great little document from Cisco directly, called "Converting a Cisco 7940/7960 CallManager Phone to a SIP Phone and the Reverse Process"
Easy to do, just follow the step-by-step directions.
http://www.cisco.com/en/US/products/hw/phones/ps379/products_tech_note09186a0080094584.shtml

Jan 21, 2010 | Cisco 7912G IP Phone

2 Answers

Can I use a CISCO IP 7941 phone, that has been on a company network, in my home? Should it just work by plugging in a telephone connection and using the appropriate power supply? Is there programming that...


Yes, there is programming which would need to be removed. However, you would need a cisco call manager($800) at home. Unless of course you have voip in your home. then you could just set it to DHCP I'm assuming and then it should just work!

Jan 14, 2010 | Cisco 7940 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

Convert CISCO 7940 to SIP


you need different files to upload by tftp
by example version 8
P0S3-08-2-00.sb2
P0S3-08-2-00.sbn
P0S3-08-2-00.bin
P0S3-08-2-00.loads
OS79XX.TXT (tells the version)
SIPDefault.cnf


Aug 25, 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

Cisco 7960G IP Phone Problem


Try to manually reset the phone - **#"Settings" (this will unlock the configuration) + Network + menu under number "33" - erase the configuration. Then the phone configuration will be erased. Also you can manually set IP address and TFTP server

Sep 11, 2007 | Cisco 7940G IP Phone

3 Answers

Phone stuck in Configuring IP


Did you check the TFTP settings on the IP phone? You may need to disable DHCP on the phone and assign the TFTP manualy or make sure the correct TFTP server is assigned.

Jan 12, 2007 | Cisco 7940 IP Phone

Not finding what you are looking for?

Open Questions:

See all Cisco 7940 IP Phone Questions

Cisco 7940 IP Phone Logo

Related Topics:

597 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cisco Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Prashant M
Prashant M

Level 3 Expert

2260 Answers

brian soufane

Level 3 Expert

693 Answers

Are you a Cisco Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...