How to connect Q52 omni to ORBCOMM satellite ??


i’m using wavecom Q52 omni and tried to connect this modem to ORBCOMM satellite.
i have already got ORBCOMM account and until now when i use APITEST=101 (->get satellite number) the return value is NULL. it indicates that my SC didn’t connect to satellite or satellite is in not viewed.However, when i see the real-time simulation in website ORBCOMM, there are several satellite on the top of me. so, the only one reason why my SC can’t connect satellite is i missed some procedure that i don’t know what it is.
can anybody explain what i have missed ?
i think i need more clear explanation how to connect Q52 omni to ORBCOMM satellite.

whatever you will say, it assists me