That was awesome guys, however, I tried many times what you said but the phone 
can’t pass Green LED light on Speaker phone.     

Here is what I have done, 

Plug in POE cable to power up the phone,

Press # button,  and get to the green light on speaker phone and stay there 
like forever.  I can’t even across that point and can’t even get to the 
flashing line 1 to 8 of CP-7975 LED of the phone.

Any other suggestion before I give up on these?


Thank you very much in advance to all.



From: cisco-voip [] On Behalf Of Ryan 
Ratliff (rratliff)
Sent: Monday, February 12, 2018 8:11 AM
To: Anthony Holloway
Subject: Re: [cisco-voip] Cisco 7975 or 7965 stuck at speaker button Red LED, 
sorry if this is a repost


There are 3 I can find documented internally.

1. Soft Reset (documented publicly)

2. Hard Reset (see below)

3. Hard Reset but keep network settings (Terry’s)


The hard reset is:

3491672850*# - the “nuke it from orbit” option which is a total format the 
flash, hard reset but does not preserve the network.


Prior to version 8.3.3 only the first 2 existed, but number 2 unintentionally 
kept the network preferences, acting like number 3 does today (see CSCsi60439).




On Feb 12, 2018, at 10:39 AM, Anthony Holloway 
<> wrote:


"The code for the network preservation hard reset is: *7412369#085" 


And then there were three.


Wes, Ryan, Brian, how many are there really?


On Mon, Feb 12, 2018 at 9:31 AM Terry Oakley <> wrote:

I have used the below to reset 79xx series phones and load a new firmware on 
them.  Setup a laptop with a TFTP server on it and on most I have been able to 
recover what looked like a bricked unit.







Terry Oakley

Telecommunications Coordinator | Information Technology Services

Red Deer College |100 
<>  College 
Blvd. | Box 5005 | Red Deer | Alberta | T4N 5H5

work (403) 342-3521   |  FAX (403) <tel:(403)%20343-4034>  343-4034




#Total Hard Reset

The code for the total hard reset is: 3491672850*#

A total hard reset formats /flash0 blowing away everything except CNU.  All 
settings and personalization of the phone is removed.

#Hard Reset with Network Setting Preservation

The code for the network preservation hard reset is: *7412369#085

And it also does a complete format of /flash0 - yet it preserves the network 
settings so that after the format, any static IP and other network settings are 
preserved. The settings are stored in volatile RAM, so it is important to not 
remove power to the phone during this process


There are a number of prerequsites that are necessary for a successful factory 

1.            You must have a network environment in which DHCP is used to 
provide the phone with an IP address and a TFTP server (i.e. DHCP option 150).

2.            There must be an appropriate default load for your phone model on 
that TFTP server:      

o             The default load name is: termxx.default.loads (where xx is part 
of the model number, 41 for 7941, 62 for 7962, 70 for 7970, etc.)

o             The version of the default load must be the same signing type 
(dev or release) as the phone on which you wish to do a factory reset.

o             This file (termxx.default.loads) is packaged with every phoneload 
that is installed on the callmanager, but since the name is not unique per 
phoneload version, the copy of termxx.default.loads is always the one from the 
most recent load that was installed on the callmanager. It may not be the type 
(dev or release) that you want.



From: cisco-voip [] On Behalf Of 
Vinnie Dao
Sent: Sunday, February 11, 2018 11:07 AM
To: 'Anthony Holloway' < 
<> >

Subject: Re: [cisco-voip] Cisco 7975 or 7965 stuck at speaker button Red LED, 
sorry if this is a repost


HI Anthony,

Appreciated your reply,

The link you sent requires login,


I am not sure what version on them, since they are stand by units for a while,  
from the last time they were working at one point.  I tried to reset, 
1234567890*# but still the same issue.


From: Anthony Holloway [] 
Sent: Sunday, February 11, 2018 9:53 AM
To: Vinnie Dao
Subject: Re: [cisco-voip] Cisco 7975 or 7965 stuck at speaker button Red LED, 
sorry if this is a repost


Did you already look through the bug search tool? 


What version of firmware is it, and what can you do to clear the problem?  
I.e., Power cycle the phone?


On Sun, Feb 11, 2018 at 11:49 AM Vinnie Dao <> wrote:

Greeting to all,


Lately, I have some CP-7965 and CP-7975 stuck at speaker button during boot up 
as red LED and stay there for long time.  Has anyone got this issue and know 
how to fix it?


Please advise where to go from here to resolve this issue, and thank you very 
much for your time.


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