Alarm Monitoring

Is this company O.K for alarm monitoring. AMS Home Page
If its not does anyone know a similar company online. Also will regular alarm companies monitor an alarm system that you installed yourself. I installed it myself as an Alarm technician but don’t want to use the monitoring our company offers.
Also the system is a DMP XR550. Does the company have to offer DMP in order to monitor it or can any company as long as the system has the communication type set to CID and the radio is full data like the Napco SLE-GSM 3-4 G or the uplink 4530EX.
Thanks