7935 Registration Issue

[Billy Dodson]

I am having a problem here lately with the 2 7935's I have unregistering from CM and go to configuring IP screens. Once the power is cycled to the phones then they will re-register. These 2 phones are not in the same location as each other, and neither are in the same location as the CM/unity servers. CM ver 3.3, 7935 load ver P00503010100. Anyone know of a bug or anything related to this?

[rjain]

These phones does not have the port for data vlan,so they should be only in its own vlan.Use the follwoing config.

For Catalyst 2900XL and 3500XL products:

config t

interface 0/x

switchport access vlan z

no switchport voice vlan z

no switchport mode trunk

no switchport trunk encapsulation dot1q

end

For Catalyst 4xxx, 5xxx, and 6xxx products:

set port auxiliaryvlan x/y none

set vlan z x/y

set trunk x/y off

Where Z is the Voice Vlan. Put the port into access vlan for voice vlan.

[Billy Dodson]

That is currently how I have the switch configured. I have spanning-tree portfast on, but that should not make a difference right? When I read your reply that sounded like it would solve my issue, but the switch was already configured right for that port. Any other ideas?

[rjain]

Port fast will not matter, in fact this will make the ip phone to register with call manger very quickly by passing listening and learning states. I don't have the clue other than that i sent.

[matthew.cure]

If you enter administrative mode on the 7935 and look at network settings, there probably will not be a TFTP server entry in there. For some reason, the 7935 phones sometimes need to have the TFTP server manually entered by selecting YES to Alt-TFTP and entering in the IP address in the TFTP field (even when option 150 is correctly configured in DNS).

[matthew.cure]

...correctly configured in DHCP, that is :--}.

[Billy Dodson]

I also upgraded the firmware on the phones, so I will check out those tftp settings. Thanks for the help.