CCOM Communication

Single board modularized SDH Optical Transmission system
OTS-155B

OTS-155B is a STM-1 optical transmission system, whose technical performances are fully complied with ITU-T recommendations. This system is benefit of high integration, flexible construction and strong network adaptability. OTS-155B provides 2 155.52Mb/s aggregate line interfaces ofA and B, possessing the network elements timing function of ITU-T G.813 recommendation, and VC-3/VC-12 full-crossing connection and channel protection function.

Features
> World-leading design adopts independent ASIC, with 1U structure, compactness,
   high reliability, low power consumption;
> Two STM-1 optical interface, with capability of 63 x 63 VC12 non-blocking
   cross-connect and 1+1 channel protection;
> supports tributaries Add/Drop of 24 x E1 at most,
> Assembled with corresponding interface cards, can provide E1, Ethernet
   and some other interfaces;
> Supports ITU-T G.813 standard NETF, switching automatically between multi
   time sources;
> Provides Engineer Order Wire (EOW) interface (two-line model), with group
   call and dial functions;
> Provides F (Ethernet) and f (RS232) NMS interface, realizes ITU-T suggested
   five functions – network resources, equipment configuration, alarm,
   performance and security management functions;
> Supports system software remote upgrading ;
> Alarm and perform information can be stored during the course of power off;
> By changing the optical transceiver, supports ultra-long distance (≤80km),
   long distance (≤50km) optical transmission;

Typical Application
OTS-155B can be used for building point-to-point, chain, star of ring network, with SNCP features, serving departments of Telecom, Traffic or Energy industry, etc.



Product Architecture
OTS-155B consists of 1 system motherboard and service cards.
OTS-155B system motherboard is integrated by optical interface, Clock and Data Recovery (CDR), SDH Equipment Clock (SEC), Timing Processor, Payload and pointer processing, cross connection and 24xE1 mapping, network management and EOW functions. It has 3 service slots for service cards and is the core of the SDH equipment.
OTS-155B system service cards include E1 cards and Ethernet cards, which provide E1 and Ethernet service

Technical Specification

Data Summary

Dimension

481mm(L)×355mm(W)×44mm(H)

Weight

3.76Kg

Supply voltage

-48VDC±10%, -220VAC±10%

Power consumption

10W±10%(The spare power unit is optional)

Operation temperature

0℃-45℃

Humidity

≤90% (free from condensing)

Atmospheric pressure

70-106Kpa

Storage temperature

-20℃-70℃

Environment

Free from corrosive gas and soluble gas, or dust nuisance, without strong electromagnetic field in the vicinity.

Interface characters STM-1 line interface

Bit Rate

155.520Mb/s±4.6ppm

Standard

ITU-T G.957/G.958

Media type

ITU-T G.652/G.653, single mode

Work wavelength

1310nm (1550nm is optional, declare when ordering)

Relay-free transmission distance

50Km (70~100Km is optional, declare when ordering)

Sensitivity

≥-36dB

Adaptation

FC (SC is optional, declare when ordering)

Interface

S-1.1

E1 Tributary interfaces

Bit Rate

2.048Mb/s±50ppm

Code pattern

HDB3

Standard

ITU-T G.703

Impedance

75Ω Un-balanced (120 Ωbalanced is optional)

Jitter

Comply with ITU-T G. 823

SETS interfaces

Standard

Comply with ITU-T G.813/783

Input

T1, T2, T3

Output

T4

Function

Support SSM, working in tracing、holding or free run mode

Card Introduction
E1 service cards series products list

Serial Name

Serial Type

Card Type

Description

Comments

5 E1 service card

X5

X5-SU

5×E1 ports service card，75Ω，SAA E1 interface,

External time source or Extend network management interface(selected by jumper)

X5-HB

5×E1 ports service card，120Ω，2mm high density E1 interface,

External time source and Extend network management interface.

Dedicated 2mm line

8 E1 service card

X8

X8-SU

8×E1 ports service card，75Ω，SAA E1 interface.

X8-HB

8×E1 ports service card，120Ω，2mm high density E1 interface.

Dedicated 2mm line

Ethernet service cards series products list

Serial Name

Serial Type

Card Type

Description

Comments

1xE1 Ethernet service card

XET2

XET2

1xE1 Ethernet service card,

Transmission Bandwidth is 2M.

4xE1 Ethernet service card

ET8

ET8

4xE1 Ethernet service card,

Transmission Bandwidth is 2-8M.

E1&Ethernet multi-service card series products list

Serial Name

Serial Type

Card Type

Description

Comments

5 E1 + Ethernet service card

X5ET2

X5ET2-SU

5×E1+ Ethernet service card,

75Ω，SAA E1 interface,

External time source or Extend network management interface(selected by jumper)

X5ET2-HB

5×E1+ Ethernet service card,

120Ω，2mm high density E1 interface,

External time source and Extend network management interface.

Dedicated 2mm Cable