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Raisecom
iTN2100 (P100R002) Hardware Description
15 PDH and RCMS cards
Raisecom Technology Co., Ltd.
141
15.2.3 Interfaces
Interface types
There are two interfaces on the OPCOM3500E-32E1/32E1-BL, and the interfaces on the two
cards are the same, as listed in Table 15-7.
Table 15-7
Interfaces on the OPCOM3500E-32E1/32E1-BL panel
Interface
Connector type
Description
E1 1–16,
E1 17–32
SCSI female connector
(100pin)
The OPCOM3500E-32E1 has two unbalanced
interfaces.
The OPCOM3500E-32E1-BL has two balanced
interfaces.
Each interface transmits 16 ways of E1 services.
Interface parameters
Table 15-8 lists parameters of the SCSI interface on the OPCOM3500E-32E1/32E1-BL.
Table 15-8
Parameters of the SCSI interface on the OPCOM3500E-32E1/32E1-BL
Parameter
Description
Connector type
SCSI female connector (100pin)
Nominal rate
2048 Kbit/s±50 ppm
Line code
HDB3
Interface impedance
75
Ω
for the unbalanced interface
120 Ω for the balanced interface
Electrical parameters
Comply with ITU-T G.703 recommendations.
Frame structure
Comply with ITU-T G.704 recommendations.
Jitter
Comply with ITU-T G.823 recommendations.
15.2.4 LEDs
There are three LEDs on the OPCOM3500E-32E1/32E1-BL panel, and the LEDs are the
same on the two cards, as listed in Table 15-9.
Table 15-9
LEDs on the OPCOM3500E-32E1/32E1-BL panel
Interface
Status
Description
PWR
Green
Power LED
Green: the power supply is normal.
Off: the power supply is abnormal.