snmp problem

i have loaded mibs for my device in OPmanager, and in mib browser i am able to GET Object ID,

callID.1:-->24
callState.1:-->Connected
callRemoteSite.1:-->1.1.1.1
callDirection.1:-->Incoming
callProtocol.1:-->h323
callType.1:-->Video
callDuration.1:-->0 hours, 0 minutes, 51 seconds.

than i am creating new device template, querying device and getting system OID,

adding new SNMP monitor with the same OID as in mib browser.

and associating this template to device (that i already added by snmp)

in the device performance monitor , i see newly created monitor , i am going in "edit" than clicking "test monitor " and receiving this answer.

" The Monitor did not respond to the test request"

i have changed values in NmsProcessesBE.conf by setting

DATA_COLLECTION_SNMP_TIMEOUT 5

than

DATA_COLLECTION_SNMP_TIMEOUT 15

than

DATA_COLLECTION_SNMP_TIMEOUT 30

under

PROCESS com.adventnet.nms.poll.Collector

ARGS POLL_OBJECTS_IN_MEMORY 25 POLL_JDBC true MAX_OIDS_IN_ONE_POLL 15 AUTHORIZATION true DATA_COLLECTION_QUERY_INTERVAL 120000 PASS_THRO_ALL_POLLING_OBJECTS true CLEAN_DATA_INTERVAL 999999 DATA_COLLECTION_SNMP_TIMEOUT 5

but without success.

maybe someone can give me some tip or something ?