Vendedor joanhu

inquiry key facts scg-601 with 1sim 1tel; reverse polarity (12khz is option, quad band gsm 900/1800mhz or 850/1900mhz to connect analog pbx, tel, payphone, voip or billing system packing detail main functions: suitable for gsm 900/1800mhz or 850/1900mhz pstn network, using sim card making & answering calls after connecting to telephone set can make phone calls via gsm or pstn network by choice or according to the routing parameters pre-defined on the route available to connect with telephone set, pbx, billing machine, etc caller id redialing hands-free voice adjustment of calling in and out, multi lever volume to be chosen featured with signal intensity indicator, working status indicator, breakdown indicator can proceed with setting up and modification of parameters through the phone set built-in pin code protection featured with locking device/card/network technique parameters: working frequency: gsm 850: tx 824 to 849mhz; rx 869 to 894mhz e-gsm 900: tx 880 to 915mhz; rx925 to 960mhz dcs 1800: tx 1710 to 1785mhz; rx 1805 to 1880mhz pcs 1900: tx 1850 to 1910mhz;rx 1930 to 1990mhz power consumption: <=5w working voltage: dc12v user access port: dialing tone frequency: 450hz continued busy tone frequency: 450hz 0.35s/0.35s package information: volume: 175(l) x 110 (w) x 30 (h) mm weight: 629g package: 1pc/box; 20pcs/carton?