need help on setting up VOICE and DATA vlan with CUCM7

[rammany19]

TOPOLOGY

PSTN--------2811 ROUTER------3550 SWITCH------------------CUCM7(WITH DHCP CONFIGURED FOR IP PHONE)

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                                            LAN with IP phone

CUCM7 is giving IP to IP PHones but i will like to setup DATA DHCP on the 2811 router, please what do i need to configure on the switch and router, i tried one just now with ip helper-address but its not working.

[phooghen]

On the router interdface connected to the switch you will have for example:

interface FastEthernet0/1.212

description Voice VLAN

encapsulation dot1Q 212

ip address 172.16.1.2 255.255.255.0

ip helper-address 172.16.1.1     -----> IP address of the Callmanager (TFTP)

ip flow ingress

!

interface FastEthernet0/1.222

Description Data VLAN

encapsulation dot1Q 222

ip address 172.16.22.254 255.255.255.0

ip flow ingress

For the PC DHCP, here is the router configuration

ip dhcp pool PC

   network 172.16.22.0 255.255.255.0

   default-router 172.16.22.254

On the switch, the here is the config:

interface fast x/x

switchport

switchport trunk encapsulation dot1q

switchport mode trunk

[rammany19]

Hello,

i tried this your config but the PC is still getting IP from the CUCM, what might be wrong?