SUPM1 POTS 16-port

Physical front interface
16 or 64 analogue telephony (FXS) interface (acc. to ITU-T Q.552)
Input and output overvoltage protection (acc. to ITU-T K.20)
TDM bus access
Functions/mode of operation
SIP via VOIP1
Mercury CAS
Other function: Analogue voice/FAX/modem services, onboard ringing generator, onboard line-test function, DTMF and pulse dialling, polarity reversal etc.
Usable in subracks XMC25/23