OfficeServ 7200 System Description
© SAMSUNG Electronics Co., Ltd.
2-25
Table 2.17 Ports and LEDs of the 4BRI
Ports, LEDs
Functions
P1-T~4-T
Office (trunk) Port
P1-S~4-S
Internal (station) Port
RUN LED
4BRI Board Operation Status
- Off: 4BRI board is abnormal or power is disconnected
- On: 4BRI board is properly operated.
ACT LED
4BRI Board LAYER1 SETUP Status
- Off: LAYER1 SETUP Abnormal
- On: LAYER1 SETUP Normal
2.3.2.8 2BRM
The 2BRM (BRI Module) is mounted on UNI and provides two 2B+1D digital trunk ports.
This module is connected to 4 channel ISDN trunk in S and T mode. In S mode do not
support DC power feeding.
Key Functions
The 2BRM provides the following functions:
Full duplex 2B + 1D S/T interface transceiver based on Consultative Committee on
International Telegraphy and Telephony (CCITT) I.430
Frame conversion between S/T interface and ISDN Oriented Modular (IOM)
Receive timing recovery according to a specific operation mode
D-channel access
Activation and deactivation procedures (automatic wake-up in power-down state)
Specification
The 2BRM provides four B channel and two D channel.
The maximum number of 2BRMs that can be installed onto an OfficeServ 7200 MP20S is
four, and two UNIs are required for the maximum configuration.
And this UNI has to be inserted in universal slot number 1 or 2 (Slot 1, Slot 2 only).
Appearance
The 2BRM can be mounted as a daughter board on the UNI.
Maximum 4 boards can be mounted in a system.
There is no separate line connection part within the 2BRM. It is connected to an
external line through the RJ-45 connector on the line connection part, located at the
right side of the system.
Switch on of S1 provided a termination 100 ohm for S mode.
