IP Phone not getting DHCP address

[vineesh.viswanath]

IP Phones which are connected to a 2950 switch [PC on vlan10 and Phone on 20] {Siemens optipoint phone] .

R*-C1800 , on debugging dhcp packets ,i could see that packets are forwared to the dhcp server and its getting back an ip address and it is unicasted to the phone , but the phone is not accepting the ip .

query : i have noticed that the mac address for the phone is registering on the access vlan mac table and its forwared from the router as the access vlan subnet .

DHCP Server is located in the Branch office connected to the Core 4510 Switch ,

When the phones are connected to any port in the Core switch , it fires up straight .

Please assist .

[janf]

mac reservation does not work for one phone but it did however work for another

[vineesh.viswanath]

for this what i have done is , put a reservation for the PC also, whose mac coming out from the phone port

[vineesh.viswanath]

we ve reported the problem to siemens no luck ....