Question about Cisco 7941G-GE IP Phone

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When I plug the 7941 cisco phone up to our network on a POE switch, it responds with the message "Ethernet Disconnected", but when we plug another Cisco 7941 phone to the same line it works perfectly... We have tried every possible solution we could think of but we are coming up short

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I would check your duplex settings. Often, if you hard code the duplex settings or have a mis-match; one end may not talk properly. Also, have you tested the wiring? Do you know the ethernet is okay for sure? TechRx, Inc. - techrxgb.com

Posted on Aug 27, 2010

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Do the Cisco Catalyst 3850 Series PoE switches support power classification?


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on Jun 30, 2011 | Computers & Internet

1 Answer

PoE Cable for Polycom IP 500


Check if the switch uses active or passive PoE and the volts it pushes out

Active(PINS)1 2 3 4 5 6 7 8RX/DC+ RX/DC+ TX/DC- n/a n/a TX/DC-
Passive(PINS)1 2 3 4 5 6 7 8RX RX TX DC+ DC+ TX DC- DC-
Cat 5 cable9V < 30m cable length12V < 60m cable length
Max Ethernet cable length is 100m

Jan 14, 2012 | Polycom Poe Cable for Cisco For Use with...

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

2 Answers

Hello, my cisco ip phone does not start


Confirm if the Phone has power supply. and If it's connected to a POE switch confirm that it connects to the Switch port on the phone.

Oct 14, 2009 | Cisco Computers & Internet

2 Answers

Cisco IP phone 7941-- No power on the phone just a blank screen after I installed a headset, I did unplug the headset but is not coming back on.I also tried a new Ethernet cable but no luck. What can I do...


Is the phone connected to a POW (Power Over Ethernet)Cisco Switch? Check the model number of the switch with the Cisco web site www.cisco.com

Have you check whether there is power available on the switch?
enter "show power inline" at the command prompt.

Does the phone work without the head set?
Does the same thing happen when you plug in the head set on another phone?

Jun 18, 2009 | Cisco 7940 IP Phone

3 Answers

Inline power problem: cisco ip phone 7941G


You need to ensure that each port that has a phone plugged into it is configured with power over ethernet configured switched on.

Mar 20, 2008 | Cisco 7940 IP Phone

1 Answer

Netgear fs726tp and cisco phones


that the 7940 and 60
phones from Cisco do not support the IEEE 802.3af Power Over Ethernet
standard
they would work if you
simply reversed the polarity of 2 of the pairs of wire. i.e
by swapping 4 with 7, and 5 with 8 you could use a standard
POE injector to power the phone.
if you have a crimp tool and some cable laying around, you can give it
a whirl and it works. If you aren't familiar with making cable,
don't try this
Basically, you just wire one side of the cable as standard 568b
and then reverse 4 and 7, and 5 and 8 on the other side. Then,
simply plug your Cisco into a standard POE injector and Your phone works.

Nov 16, 2007 | NetGear ProSafe FS726TP Smart Switch...

1 Answer

Ethernet Disconnected message in POE 7941G IP Phones


the first problem will be to check or replace the cable that you use to connect the phone or check the jack that you use

Jul 12, 2007 | Cisco 7941G-GE IP Phone

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