Your Position: Homepage > Products > SDH


0TS-622 is multifunctional transmission equipment, has STM-1 and STM-4 optical interface with standard transmission rate, slot-structure, multiple light directions, high integrated E1 board and multi-channel shared Ethernet card. OTS-622 is an ideal network gateway equipment for small volume optical transmissions.

OTS-622 equipment supports 1008×1008VC12 / 48×48VC3 / 16×16VC4 non-block crossing and ADM. It also has the uni-directional and bi-directional broadcasting function.

Its network management can support assignment, warning, maintenance, supervision and management functions.


OTS-622 contains 2 optical interface on the main board, besides 4 expansion slots. E1 card, Ethernet card, Optical port card extensible.

OTS-622 Signal Processing Slot List
Module Introduction
8×E1 card 8 channels of E1(ballanced/unballanced)
32×E1 card 32 channels of E1(ballanced/unballanced)
LAN card 10/100BAS_T auto adapted
Optical interface card 1×STM-4/2×STM-1 per board
Fan card Radiator


Frame Parameter

OTS-622's framework is made of compound metal, 19 inch external width; 2U height; 24cm length.

This equipment can be located on any stable base, and can be also screwed through mounting hole to 19 inch cabinet.


Port Physical Parameter

Name Description
E1 port OP interface, connected to ddf with L9 coaxial connector.
Optical interface Optical transceiver, LC
LAN Interface RJ45
NM port DB9(socket) & RJ45


Port Electrical Parameter

Optical Interface

Code rate: STM-1/STM-4
Transmit mode:
Transmit power: -8∼2dBm
Receive sensitivity: -28∼-34dBm
Optical ports: 1∼10 STM-1/1∼4个STM-4

E1 Interface

Capacity: 8/32 channels
Transmission Type: HDB3
Transmission Rate: 2048Kbit/s
Permissible Deviation: ±5×10E-5
Impedance at E1 Interface: 75Ω/120Ω
E1 Signal Amplitude: 2.37V/3V

LAN Interface

Specification: IEEE802.3
Bandwidth: 100Mbit/s
Applicable Ethernet rate: 10M/100M auto
Work mode: Half-duplex/full duplex
Rate Control: By NM software
Mapping Path: E1-C12-VC12-TU12-TUG2-

Clock option

2048KHz external clock
STM-1 timing source inputs
STM-1 tributary clock
STM-4 timing source inputs
STM-4 tributary clock
SSM function
working mode:
            locked/keeping/Internal mode
priority: NM software control


Capacity: 25
Calling function:
all call, selective call, group call
Code mode: A-law/µ-law
Interface: VF
Ring frequency: 450Hz
Ring mode: buzzer

Working environment

Feeding mode: -48V/DC
Voltage range: -48V±15%
Operation temperature: 5℃∼45℃
Relative humidity: ≥95%(T≥25℃)


Point to point mode

Star mode

Ring mode



©Hengguang Technologies Copyright 2010