7970 IP phone

Answered Question
Jul 29th, 2008
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Hi all,


This may seem to be a wierd question. We have a user who got upgraded from a 7940 Ip phone to a 7970 IP phone. The new phone is setup from scratch.


The good news is that everything works absolutely fine. However, the user cannot increase the brightness on the phone. I thought that this could possibly be the problem with the phone and I replaced the IP phone whith another 7970 phone. The result sohow seems to be the same. Can anyone please tell me what is going on. Thanks in advance.

Correct Answer by Rob Huffman about 8 years 10 months ago

Hi Naveen,


This is a very good question! This is likely a PoE issue.


Have a look at the following, which details numerous PoE setups where the IP Phone will only be Half-brightness


Table 2-2 Power Consumption and Display Brightness for Power Configurations


Phone Screen Brightness Approx. 1/2


http://www.cisco.com/en/US/products/hw/phones/ps379/products_administration_guide_chapter09186a008066b8d0.html#wp1079121


Hope this helps!

Rob

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Correct Answer
Rob Huffman Tue, 07/29/2008 - 12:03
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Hi Naveen,


This is a very good question! This is likely a PoE issue.


Have a look at the following, which details numerous PoE setups where the IP Phone will only be Half-brightness


Table 2-2 Power Consumption and Display Brightness for Power Configurations


Phone Screen Brightness Approx. 1/2


http://www.cisco.com/en/US/products/hw/phones/ps379/products_administration_guide_chapter09186a008066b8d0.html#wp1079121


Hope this helps!

Rob

Rob Huffman Wed, 07/30/2008 - 04:44
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Hi Naveen,


You are most welcome my friend :) Thanks for the kind words.


Take care,

Rob

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