Tender For supply of pstn modem compatible with siemens msdac/bpac system which must failsafe. modem must be suitable for siemens make msdac(azs-350u/acm 200) systems with baud rate of 1200 and modem to work on both e-1(ofc) and quad. modem must offer bump less switching among the media i.e. e-1(ofc) and quad. modem shall have direct connectivity with e-1 and msdac/bpac evaluator unit. make- efftronics,etic and siemens. [ warranty period: 30 months after the date of delivery ]