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Beginner

IP PHONE REGISTRATION ISSUES

i have IP phone showing verify your network connection and won't work , when i enter static IP, it works ,in DHCP server i have  two IP scope one of them is complete the other have valid IP . is this require any thing in CUCM

4 REPLIES 4
Hall of Fame Cisco Employee

Re: IP PHONE REGISTRATION ISSUES

If the device is already configured in CUCM, or your CUCM is configured for auto-registration, that's it.

I'd make sure your DHCP has all the required parameters and that the device does get all the required network configuration to reach out to CUCM.

HTH

java

if this helps, please rate
Beginner

Re: IP PHONE REGISTRATION ISSUES

this is new phone has'not been configured and dhcp server has all two scope but the phone won't take IP unless I assgin static IP for it

Rising star

Re: IP PHONE REGISTRATION ISSUES

Nothing is required in CUCM for IP Address assignment.
1) Have you configured DHCP Relay so that DHCP Request are relayed to DHCP Server
2) Try creating a DHCP Server in the same subnet in switch or router.
3) Do a packet capture on PHone to see if we are receiving DHCP Response back. Just connect a PC with Wireshark Installed on Back of Phone.

*** Please rate helpful post; Mark "Accept as a Solution" if applicable

Thanks,
Haris
VIP Rising star

Re: IP PHONE REGISTRATION ISSUES

To add to what Haris suggested:

In the Status Messages on the phone, does it show DHCP Timeout or TFTP Timeout?

Maren

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