- It spontaneously reboots
- It runs noticeably slower
- It fails to Shutdown
- It will not boot
- Windows or software crashes
These are almost never a symptom of a software fault. You can exchange the modem for a different model/revision or for a totally different modem by a different manufacturer.
For professional multiline installations we strongly recommend you consider using a professional telephony card(such as Digi Acceleport Ras 4/8 Port Modem cards,
Dialogic Diva Media Boards 2/4/8 Ports, Mainpine IQ Express 2/4/8 Port Modem,
Multi-Tech MultiModem ISI Multiport Analog Modem and Comtrol RocketModem IV, etc.).