... a fixed telephone line (PSTN) is not available or for cellphone roaming via the a VoIP network. The GoIP1 brings mobility ... for the LAN and an additional device Quad band GSM module: support GSM 850MHz, 900 MHz, 1800 MHz, 1900MHz Speech quality ensured ... : ARM9E 133MHz DSP: VPDSP101 95MHz Memory: RAM 8MB/ Flash 4MB GSM Module: Type: 850MHz, 900MHz, 1800MHz, 1900MHz Power: Input AC100V ~ 240V ...