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Chapter 2
System Boards
JP1
JP2 JP4
JP3 JP5
S1
S2
The T1 is a high-speed digital line with a data transmission rate of 1.544Mbps. The T1 offers 24
separated communication channels. Each channel is used for PCM data communication at 64Kbps.
The PRI (Primary Rate Interface) includes T1, and E1 type stations, but the SMG-3200 only
provides E1 type PRI. E1 type PRI offers 30B channels and 1D channel (30B+1D). Each channel
provides 64Kbps data communication.
❶ DIP Switch
Switch
SwitchSwitch
Switch Description
DescriptionDescription
Description
S1
S2
S1 and S2 switches are intended to select Card ID according to the line type
connected to the E1/PRI, T1 board.
y
To connect E1,
☞
Set both S1 and S2 switches to ON.
y
To connect T1,
☞
Set S1 switch to ON, and set S2 switch to OFF.
y
To connect E1 type PRI,
☞
Set S1 switch to OFF, and set S2 switch to ON.