Figure 4-21: mpi box front panel, Figure 4-22: mpi box rear panel, Pin connector converts data from four ports – Polycom DOC2237A User Manual
Page 113: Mgc hardware and installation manual
MGC Hardware and Installation Manual
4-41
Each 160-pin connector can be connected to one 160-pin connector located
on the front panel of the MPI box.
Figure 4-21: MPI box front panel
Each of the 160-pin connectors on the MPI box interfaces to four serial ports
found on the back of the MPI box. Therefore, each MPI-8 Network Interface
module can be connected to up to eight ports. Each port has two connectors:
37-pin connector and the 25-pin connector. The 25-pin connector is used to
dial to an endpoint over an ISDN switch. (In leased line connection this port
is not used.) The 37-pin connector connects to the serial cable coming from
the DCE.
Figure 4-22: MPI box rear panel
PORTS
1-4
A
A
B
B
PORTS
5-8
PORTS
9-12
PORTS
13-16
160-pin connector
Converts data from four ports
160-pin connector
Converts data from four ports
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P12
P13
P11
P14
P15
P16
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
DI
A
L
P12
P13
P14
P15
P16
P7
P8
P9
P10
P11
P1
P2
P3
P4
P5
P6
Single port
connection
RS-449 37 pin
D-type
connector
RS-336 25 pin
D-type
connector