GSM-Forum - unlock error 2720a-2b

when i unlock nokia 2720a-2b i fase this error given below log.
pls giv me the solution for this error

Imei net: 01198800561028
Version: SIMLOCK SERVER
Provider: Rogers AT&T Wireless, Country: Canada
Counter: 0/3, 0/10

CONFIG_DATA: 3027200000000000
PROFILE_BITS: 800000000003000B

BLOCK 1: 1.LOCKED (MCC+MNC): 302370 2.LOCKED (GID1): DD
BLOCK 2: 1.LOCKED (MCC+MNC): 302720 2.LOCKED (GID1): DD

Calculating SIMLOCK RPL using security server ...Connection refused
Connection refused
Connection refused
ERROR: could not connect to server!