OfficeServ 7200 System Description
© SAMSUNG Electronics Co., Ltd.
2-9
Common Resource Module (CRM): The CRM is to detect and generate DTMF signals
and CID signals. The CRM is mounted on LOC1 or LOC2 in the MP 20 and the
location is indicated on the MP20.
Integrated Resource Module (IRM): The IRM is to detect and generate DTMF signals
and R2/CID signals. The IRM is mounted on LOC2 in the MP20 and the location is
indicated on the MP20.
MP20 has a 2-Wire Full Duplex modem and can commonly use it with OfficeServ 500
system. Be careful with the direction of the MODEM when mounting/dismounting on
the MP20. The MODEM operates in OfficeServ 7200 via V.23 interface and uses a
modem chip for Central Office, which can perform Pulse Code Modulation (PCM)
highway interface. In addition, the MODEM supports V.90 protocol. OfficeServ 7200
controls the MODEM via serial communication using standard AT commands.
Table 2.3 Option boards of the MP20
Option board
MP20
Max
LOC1
LOC2
LOC3
RCM2
-
-
1
MIS
-
-
1
CRM
-
2
IRM
-
-
1
MODEM
-
-
1
Specifications
The specifications of the MP20 are shown in the table below:
Table 2.4 Specifications of the MP20
Category
Item
Specifications
CPU
Processor
MPC8247T
System clock
66 MHz
Package
516P BGA
SDRAM (For saving
programs and data)
Capacity
128 MB
Data bus width
64 bit
Flash ROM
(For booting)
Capacity
512 KB
Data bus width
8 bit
Flash ROM (For Data
saving)
Capacity
32 MB
Data bus width
8 bit
Time Switch
Basic switch
256 (Tx) x 256 (Rx)
Data bus width
16 bit
Others
Internal MOH port
1
External MOH port
2
