... or call out times3) It can connect with ordinary telephone set, PBX , VOIP Gateway, Billing meter etc.; ... 5sec to 9 secs by setting up from telephone set;8) Can adjust voice volume by ... 1900Mhz,900/1,800Mhz phase 2+ full band Frequency ranges: A) GSM 850 GSM 1900: I) Transmission: 869.2 ~ ... /41mAChecking Package:BL-8832G GSM 8 PORTS FWT: 1pcs;Power Supply Cable: 1pcs,GSM Antenna with 3m cable: 8pcs ...