1.Overview

ZCS-3500 is the Multi-Service Transport Platform (MSTP) compatible with ITU-T standard. It is designed as a cost-effective and flexible multi-service platform, with STM-1 / STM-4/STM-16 level uplink ports and abundant optional downlink cards to provide typical E1 traffic, PCM traffic (FXO/FXS, E&M, RS232/485) optical tributary, EOS and EOP traffic access and aggregate. As an important feature, the SDH uplink module and Ethernet uplink module can work simultaneously. Between each SDH uplink module and each sub-slot, there are STM-1 LVDS connections, and similarly, between each Ethernet uplink module and each sub-slot, there are LVDS Gigabit Ethernet connections. With this backplane design, TDM traffic in SDH/MSTP network and packet traffic in IP network can be distributed and aggregated in ZCS-3500.

A powerful timeslot cross-connection and IP data switching facility is supplied. With the ability of connecting various network topologies, reliable self-healing mechanism, and unified intelligent management system, it is suitable for enterprise access, private network interconnection, mobile base stations connection and video monitoring.

2.Feature

• Structure：
  
• 3U height, 19 Inch width standard, 9 card slots.
• LVDS clock-free backplane, independent SDH-Bus and GE-Bus architecture.
  
• SDH uplink interfaces：
  
• Number of ports: 4XSTM-1, 2XSTM-4,  or 2XSTM-16;
• Date rate：
• STM-1: 155.520Mbit/s
• STM-4: 622.080Mbit/s
• STM-16: 2488.320Mbit/s
  
• Connector: SFP slot, Hot pluggable.
• 32× 32VC4, 96× 96TU-3, 2016× 2016VC12, non-blocking cross-connection.
• Single/double terminal 1+1 linear Multiplex Section protection and SNCP protection.
• Point-to-point, chain, ring and tangent ring network topology.
• Supports ALS (Automatic Leaser Shutdown).
• Supports RPD (Remote Power down Detection).
• Supports optical line loop and device loop.
  
• Compliance: ITU-T G.957, G.841, G.813, G.707,G.825.
• Ethernet uplink interfaces：
• Number of ports: 4.
• 2 electrical Gigabit Ethernet (GE).
• 2 optical Gigabit Ethernet (GX).
• Connector:
• RJ-45 for electrical (1000BaseTx).
• SFP for optical (1000BaseSx or 1000BaseLx).
• Date rate:
• Optical 1000 Mbps.
• Electrical 10/100/1000Mbps.
• Each card can aggregate the 1000M Ethernet traffic from multiple downlink cards.
• Diversified downlinks：
• Diversified downlinks include SDH optical downlink, E1, PCM (FXO/FXS, E&M, RS232/485), EOS and EOP downlink.
• Communication with the remote Ethernet media converter, SDH and MSTP terminals.
  
• Up to 128 E1 ports.
• Up to 32 Ethernet ports.
• Up to 32 STM-1 ports.
• Up to 120 FXS/FXO/E&M ports.
• Up to 60 RS232/RS484/64Kbps ports.
• Supports the embedded E1 BERT testing.
  
• Timing：
• Traces any timing source of STM-1/4/16 uplinks or STM-1 optical tributaries, or external timing source.
• Supports External timing output.
• The timing source can be switched manually or automatically.
• Supports free-running, tracing and hold-over modes.
• NE Management：
• CLI: Local management is performed via an CLI terminal.
• SNMP: Compatible with V1 and V2C protocol. Access is available using SNMP management software "Smartview".
• Supports DCC and EXM (Extended E1 interface for management) channel for communication between gateway and elements.
  
• Supports DCN channel for the communication between gateway and server.
  
• LED indication: Necessary alarm indications.
• Download online: Supports FTP protocol and firmware download online without disturbance of existing traffic.
• Provides top-mounted aural-visual alarm output.
  

3.Technical Specification

• Power supply：
• AC+DC dual input optional.
• AC range: 85～264V AC
• DC range : -36V ～-72V DC
• Power consumption: 100W(±10％)
• Support Redundancy Power Supply Protection.
• Physical：
• Height: 134 mm (3U).
• Width: 434 mm (19 in).
• Depth: 230 mm.
• Weight: 8.5 Kg.
• Operating environment：
• Temperature: -5~55-deg centigrade.
• Storage Temperature: -40~70-deg centigrade.
• Relative Humidity: <95% non-condensing.

4.Application

ZCS-7500/3500 as Multiservice Platform with Diverse Interfaces and Access Topologies for U&T Market Segment.

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Figure.1-4-1 Ring Application

ZCS-7500/3500 as a Central Site Aggregator for different CPEs, Ethernet and TDM Aggregator for SDH/MSTP and IP.

Figure.1-4-2 Point-to-Multi-Point Application