CP 8851 - Convert IP phone to SIP

[GlonetCisco]

We bought an CP 8811 Phone that we like to convert to sip. I have downloaded the latest zip file. (8811, 8841, 8851, 8851NR and 8861 SIP IP Phone firmware files only - Compatible CUCM Versions: 8.5(1)+ 
cmterm-88xx.11-0-1-11.zip ) I copied the files to my tftp server. After rebooting the phone it stays on "phone is registering"
I adjust the tftp setting in my dhcp to my asterisk server.

Can someone help me. It's the first we try to convert an IP phone to sip.

Regards

[Carlo Poggiarelli · Accepted solution]

Hi,

As far as I know , 8811 is sip only phone.

Please check here

http://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-8800-series/datasheet-c78-731637.html

Regards

Carlo

[GlonetCisco]

Hello Carlo,

Thank you for the answser. when we startup the phone we have to sign in with a service domain, username and password? I want to register the phone in my asterisk.

Regards

Glonet

[Carlo Poggiarelli]

Hi Glonet,

use the following link as starting point.

Here you can find different config samples to help you registering 8811 with a soft switch like Asterisk.

http://pbxinaflash.com/community/threads/cisco-8800-phones.17114/

HTH

Regards

Carlo

[GlonetCisco]

Ok thanks for the help. I made a xml file but my phone stucks on unprovisend. First of all i want to upgrade my phone to the latest firmware. I unpacked the folder cp-88xx-sip.10-3-1-9-3PCC and dropped the files in the tftp folder on my asterisk with full rights. when i reboot my phone it stays on "phone is registering"

[Aydin.armagan]

Hi 

can you resolve this problem because same error.

[Leo Laohoo]

Create a new thread and don't re-hash this one (it will confuse others). 

Put as much relevant information as you can.