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360 Telephone+4FE+4E1+2RS232 6U 13 Slots Chassis,1+1 Optical Ports Backup
256 Telephone+4FE/GE+2RS232 4U 17 Slots Chassis
60 Telephone+4FE/4GE+4E1 1U 19"Rackable Unit
1-8 Telephone+4 RS232 Desktop Unit
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