I need your help!!!

[Senior-RF-Engineer]

Der guys
I need your help!!! I have a problem im an GSM radio engineer im offered a good job with good salary in internet provider company that distributes to local servers , but I don’t know what frequencies they use how what tools the use for measuring frequency is it tems or another tool what kind of parameters they do there I only have experience in GSM only is it different work or the same pleas I need your guidance