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Description:Detailed product description Product name: Gsm 1e1 channel bank (5u, dual band - 900,1800 mhz) Digital mobile trunk (dmt)/gsm e1 channel bank is connected to e1/pri of pstn or pbx 30 voice channels are individually connected with 30 ports of gsm module Dmt can provide call detail record (cdr) for traffic and accounting management One pcb module provides 4 ports of gsm module; the last 2 ports on the last mtic are idle Total qty of gsm modules is 30 ports Gsm spec in mtic: Gsm frequency: Dual band egsm 900 and gsm 1800(gsm phase 2+) Gsm class: Small ms Transmit power: Class 4 (2w) for egsm 900: Class 1 (1w) for gsm gsm1800 Frequency available : GSM 900/1800 MHZ or GSM 850/900/1800/1900 MHZ Antenna:50 ohm antenna coaxial connector E1 trunk (isdn e1 pri) spec: As listed in the download file Control card function Providing digital tone source required in the rack
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