OTS-155B

Products introduce

OTS-155B SDH has the following features:

•  Conforms to the correlative proposal of ITU-T and related SDH technical criteria of the country.

•  Full time slot cross connect functions, having powerful, convenient Add and Drop traffic functions and modes.

•  Compliant system design: The equipment can configure either TM (Terminal Multiplexer) or ADM (Add Drop Multiplexer) mode flexibly.

• Offers system configuration for STM-1 with the methods of easy upgrading and reconfiguring networks.

• Provides multi-type tributary interfaces with excellent cost performance.

• Offers perfect network management system; flexible network configuration.

• Realizes a number of traffic protection modes.

• Provides multi-function orderwire telephone system.

• Offers electromagnetic compatibility performances (EMC and EMI) with appropriate measures.

• Well maintained; high-reliable operation.

• Pizza box type appearance.

Summary 

Equipment Characteristics

•   1U-height compact-size designation.

•   Provides 252 × 252 VC12 level, or 12 × 12 VC3 level, or 4 × 4 VC4 level non-blocking cross connection, supporting unidirectional, bi-directional and broadcasting.

•   Provides sub-network connection protection and 1+1 multiplex section protection.

•   Applicable for a number of network configurations: point to point, linear, ring, etc.

•   Provides E1, STM-1o, FE traffic interfaces.

•   Provides 2M Retiming function for E1 interfaces.

•   Provides three levels of VC4, VC3 and VC12 cross connect for 100Base-T2 module, supporting both LAPS and GFP EOS encapsulation and LCAS standard.

•   Provides virtual concatenation function for 100Base-T2, and the maximum virtual concatenation quantity for VC3 level is 2 and for VC12 is 47.

•  Provides one extended slots reserving traffics to be extended.

•   Capacity for interfaces:

•    E1 interface: up to 8 channels(main board)

•    E1 interface: up to 16 channels(sub board)

•    100Base-T2 Ethernet interface: up to 2 channels(main board, optional)

•    STM-1 optical interface: up to 2 channels(main board)

•    Either way for the use of traffic: independent or protecting each other among optical interfaces.

•   Provides orderwire interface (2-wire interface), with the functions of group calling and selected calling.

•   One 64 kbit/s V.11 user data interface per optical interface.

•   Provides timing synchronous interface:

•    2048 kbit/s or 2048 kHz external clock

•    2048 kbit/s tributary

•    STM-1 timing source inputs

•    SSM function

•    2048 kbit/s or 2048 kHz external timing source output

•   Provides DCC channel of D1 to D3; Using TCP/IP communication protocol.

•   Provides F (10Base-T) and f (RS232) network management interfaces for configuration, alarm, performance, maintenance and security functions of ITU-T definition.

•   Provides ports for four Housekeeping Alarms, four Housekeeping Controls, and a set of Alarm Output interface.

•   Provides local/remote firmware download: in-service upgrading is available for easy maintenance.

•   Allows upgrading hardware configuration data without replacing equipment.

•   Provides the network management for remote connection via serial interface or LAN, which allows monitoring remote NE.

•   Supports the following application of fiber transmission:

•    Super Long-Distance (≤80km)

•    Long-Distance (≤40km)

•    Short Distance (≤15km)

•  Meet RoHS and lead-free design requirements.