GDM8-02W   4xE1, Mini, Appending two Ethernet interface10M/100M, Full/Half duplex auto-negotiation, an asynchronous data-transmitting RS232 interface with rate 300-19.2K and official telephone channel
GDM8-02W   4xE1, 19 1U, Appending two Ethernet interface10M/100M, Full/Half duplex auto-negotiation, an asynchronous data-transmitting RS232 interface with rate 300-19.2K and official telephone channel
GDM8-02W   8xE1 || 19 1U, Appending two Ethernet interface10M/100M, Full/Half duplex auto-negotiation, an asynchronous data-transmitting RS232 interface with rate 300-19.2K and official telephone channel
GDM8-02W   16xE1, Appending two Ethernet interface10M/100M, Full/Half duplex auto-negotiation, an asynchronous data-transmitting RS232 interface with rate 300-19.2K and official telephone channel, network management
GDM8-02WE   4xE1, one Ethernet interface100M Ethernet || 19 1U
GDM8-02WE   8xE1, one Ethernet interface100M Ethernet || 19 1U
GDM8-02WD   4xE1, Appending protection of two Ethernet interface, network management
GDM8-02WD   8xE1, Appending protection of two Ethernet interface, network management
FRAM16  Centralize cabinet, can be inserted 8 fiber card
Monitoring sites   centralize monitor || basal collocates: PC interface, Uplink
Network Management Software  centralize monitor Software || can monitor 255 terminal unit