Can´t add IP phone 7821 to CUCME

[Jaro]

Hello, 

Could you please help me with this issue:

I have this router:

Cisco C3900e  15.4(3)M3,  with version 10.5 Cisco Unified Communications Manager Express

I´m trying to add cisco IP phone 7821, but when I push : voice register pool-type 7821, I will get:

ERROR: 7821 is built-in phonemodel, can not be changed

This is configured:

voice register pool-type 8831
xml-config maxNumCalls 2
xml-config busyTrigger 1
no xml-config custom
phoneload-support
num-lines 2
description Cisco IP Phone 8831
reference-pooltype 9971
!
voice register pool-type 7811
xml-config maxNumCalls 4
xml-config busyTrigger 4
phoneload-support
description Cisco IP Phone 7811
reference-pooltype 6921

Thank you for help

[R0g22 · Accepted solution]

78XX series IP Phones were added for native support starting 10.5. You cannot add fast track these phones anymore. You should be able to configure "type 7821" under your pool configs.

[Jaro]

Hello,

thanks for quick answer, could you please share with me some example of configuration  "under your pool configs" ?

Thank you

[R0g22]

This is what it would look like -

voice register dn 1
number 111

voice register pool 1
id mac XXXX.XXXX.XXXX >>> MAC for the phone
type XXXX >>> phone model
number 1 dn 1 >>> tie line button on phone to a extension/DN
no digit collect kpml
dtmf-relay rtp-nte
codec g711ulaw
no vad

[Jaro]

Thanks for answer

I have already tried it but no luck, 

To be clear I have CME router based solutions, so should it work with this ?

Thank you

[Dennis Mink]

what error do you get when you add the voicepool and just enter the 7821 as type?  can you share?

[Jaro]

Hello, thanks for answer, as I wrote above (first report) when I enter voice-pool type 7821 I received:

ERROR: 7821 is built-in phonemodel, can not be changed

Now, I tried debug registration of phone 7821 and I found this:

009436: May 4 10:05:29: TFTP: Server request for port 51094, socket_id 0x313FCAF8 for process 333
009437: May 4 10:05:29: TFTP: read request from host 192.x.x.12 (51094) via Port-channel1.12
009438: May 4 10:05:29: TFTP: Looking for 7821-3PCC.xml
009439: May 4 10:05:29: TFTP: Sending error 1 No such file
009440: May 4 10:05:29: TFTP: Server request for port 50849, socket_id 0x313FCAF8 for process 333
009441: May 4 10:05:29: TFTP: read request from host 10.67.24.117(50849) via Port-channel1.12
009442: May 4 10:05:29: TFTP: Looking for Cisco/CP-7821-3PCC/74860b8e0320.cfg
009443: May 4 10:05:29: TFTP: Sending error 1 No such file

According debug above I found, that I have to upgrade IP phone with 3PCC software, so I guess it is a issue.

Phone 7821 is new, question is, if all phones have to be with 3PCC software or I can buy it with enterprise image.

Thanks

[R0g22]

As I highlighted in my very first response, you cannot have fast track for 78XX on CME 10.5 since these are natively supported.
This phone is running 3rd party call protocol fw -

Looking for 7821-3PCC.xml

You need a phone with enterprise firmware. What is the part number at the back of the phone ? Does it have 3PCC or MPP suffixed ?

[Jaro]

Hello, 

Yes, I understand, i cannot have a fast track.

Okay, I have a CP-7821-3PCC-K9, so if I want to use it with CME 10.5, I have to buy phone with enterprise software, or is there any way to solve it ?

I think the best way will be to buy phones with enterprise firmware, what about You ?

Thank you

[R0g22 · Accepted solution]

Correct, you have to get yourself a phone with enterprise firmware. The phone models would just have a "K9=" suffixed, something like "CP-7821-K9="

That is not just for CME or a particular version. 3PCC models are for non-Cisco or 3rd Party call agents.

[Jaro]

Thanks for help Nipun, I will order this: CP-7821-K9=, I will try it and then I will let you know, if it is working.