... /100 Ethernet ports for the LAN and an additional deviceGuad band GSM module: support GSM 850MHz, 900 MHz, 1800 MHz, 1900MHzSpeech ... .729A/B, G.723.1 DTMF: RFC 2833, In-band DTMF, SIP INFO Web-base Management PPP over Ethernet (PPPoE ... Hardware SpecificationsProcessor: ARM9E 133MHzDSP: VPDSP101 95MHzMemory: RAM 8MB/ Flash 4MBGSM Module: Type: 850MHz, 900MHz, 1800MHz, 1900MHzPower: Input AC100V ~ 240V, ...