VCL-1400, STM-16 / 64 SDH Multiplexer with MPLS-TP


Valiant’s VCL-1400, STM-16/64 SDH Multiplexer with MPLS-TP is a compact POTP platform which is targeted for deployment in the edge and access part of a transport network. It can be configured both as a TDM MSPP as well as a Packet Switch. It supports both TDM and Ethernet as Line Interfaces. It offers full redundancy and comes with an expansion chassis for deployment in high drop locations and can be used in point-to-point, linear, ring, T, and mesh networks.

Data Sheet STM-16/64 SDH Multiplexer

Aggregate Interfaces

  • STM-1, STM4, STM16, STM64
  • 1GigE (SFP based optical, 10/100/1000Base-T Electrical), 10GigE

Tributary Interfaces

  • E1 / DS1, E3 / DS3
  • FE / GigE (L1 & L2) M
  • STM1 / STM4 / STM16


  • POTP Evolution: SDH, OTN & Ethernet Based line Interfaces
  • High Capacity Micro POTP: 1U to 4U
  • Packet Switching: High Capacity 60G Packet Fabric
  • MPLS-TP: Traffic Engineered Pseudowires
  • 50ms Protection on packet: ELPS, ERPS
  • SFP based SDH and GigE ports, suitable for MM and SM fibre.
  • Provides Fully diagnostic feature for each and every tributary including SFP.
  • Packet Synchronization: SyncE, 1588v2
  • Circuit Emulation: TDM over Packet
  • Recent and historic performance monitoring for each object (SDH, PDH, AU, TU, Ethernet, VCG and SFP Transceiver
  • TDM Switching: High capacity 60G LO Fabric for efficient transport of SDH & PDH
  • Supports VC12, VC-3 and VC-4 granularity
  • User programmable ALS option
  • Completion of the OS- layers, RS, MS and VC-4
  • Removing and inserting information communications SOH
  • Synchronization system based on SCM (Ethernet Synchronization Message Channel)
  • Front panel LED indication and connection for all tributaries.
  • Provides high-density tributary card (63E1, 6E3/DS3, 8STM1). Each interface is individually configurable.
  • Supports Synchronization Status Messaging (SSM) as per ITU-T G.813 standards.

Key Benefits

POTP Evolution:

  • VCL-1400 can seamlessly transition from 100% TDM to 100% Packet Box. It can be deployed as a TDM MSPP in SDH networks and can transport data traffic using GFP and LCAS.
  • On the other hand it can be configured as a Packet Switch and deployed in Ethernet based networks. It can offer TDM services on these networks through circuit emulation.
  • VCL-1400 can be deployed at gateway locations between TDM & Packet Networks and can help a network operators transition their services slowly from TDM based to packet based.

Ideal Environment

VCL-1400 can be used in the edge and the access part of the optical networks. It can be deployed as BTS or NodeB transport element in mobile networks and to build access and aggregation rings upto 10Gbps capacity.

VCL-1400 3-slot chassis can be deployed for enterprise services as a CPE or an access box. As a CPE it can provide GigE interfaces to customers, and offer L2 VPNs with QoS.

It can be used to extend L3 VPN services from a service router at central location to customer premises. VCL-1400 can be used in Triple play as a transport box, backhauling all the traffic from a DSLAM or CMTS towards the core. With support for GigE client ports and multicast, it provides sufficient bandwidth to the DSLAM and for Video distribution.


Every operator and it's network has it's own needs and requirements. VCL-1400 with it's modular architecture provides one platform which can fit into a variety of needs. This also enables a pay as you grow model. Base chassis variants of 1U (3 slot) and 2U (7 slot) along with an expansion chassis are available. A variety of line cards for both TDM and Packet help the operator arrive at the most optimal configuration for a particular requirement.


Label Switched Paths with MPLS-TP is becoming an important requirement for scaling the network for millions of subscribers and thousands of Services today. VCL-1400 provides MPLS-TP based pseudowires for traffic enginered traffic flows on trunks, which leads to better control over the packet traffic resulting in a more optimized network. This is key to lowering capex in today's cost competitive environments. MPLS-TP is also an enabler for path level protection and restoration on the network.

VCL-1400 also supports end-toend sub-50ms path level protection by supporting ITU-T G.8031 standard on MPLS-TP tunnels.

Advanced Ethernet Features:

VCL-1400 has best in class packet switching capabilities, in line with today's requirements. Ingress rate limiting ensures that every packet entering the network is within the SLA bounds agreed with the customer. This prevents one customer from congesting/choking the packet network. Each packet is classified, so that the appropriate network policies (like prioritization and scheduling) can be applied to each kind of traffic. Options for 8 CoS queues and scheduling algorithms ensure that there are sufficient options available to the network administrator to manage the data traffic efficiently. ERPS (Ethernet Ring Protection Switching) standardized by G.8032 provides 50ms protected packet rings for greater resiliency. Multiple ringlets can be configured, and multiple ring topologies of packet networks are supported.

Packet Synchronization:

VCL-1400 also support SyncE and 1588v2 for distribution of Synchronization information over pure packet networks. This is critical for deployment in mobile networks especially for LTE, where voice is packetized but synchronization is critical for cell handoff and for ensuring jitter-free voice calls.

Circuit Emulation:

As networks move from TDM towards packet, a few TDM circuits are expected to be required for a long time due to legacy reasons. It's not cost effective to maintain an entire TDM network for this small amount of traffic. VCL-1400 supports SAToP and CESoPSN for carrying this TDM traffic over a pure packet infrastructure.

Technical Specifications

Switching Fabric

  • TDM Fabric : 2.5G, 5G, 10G, 20G and 60G
  • Fully Lower Order
  • Packet Fabric: 60G

Aggregate Interfaces

  • STM-1, STM4, STM16, STM64
  • 1GigE (SFP based optical, 10/100/1000Base-T Electrical), 10GigE

Tributary Interfaces

  • E1/DS1, E3/DS3
  • FE/GigE (L1 & L2)M
  • STM1/STM4/STM16

Ethernet Switching

  • VLAN Switching (IEEE 802.1Q)
  • Provider Bridges ( 802.1ad)
  • Port Mirroring
  • Ingress Rate Limiting at 64kbps granularity
  • Programmable Committed and Peak Rates
  • Programmable Committed and Peak Burst sizes
  • Egress rate shaping on all ports
  • Optical Ethernet connection: 1000Base-LX/SX and 100Base-FX (Optional)
  • WAN Protocols: PPP, MLPPP
  • Multi Protocol Label Switching - Transport Profile (MPLS-TP), Spanning Tree Protocol (STP) and Link Layer Discovery Protocol (LLDP)
  • 8 classes of service as per IEEE 802.1p
  • 2 Rate, 3 color marking
  • Circuit Emulation (SATOP & CESoPSN)

Connection Oriented Ethernet


Network Protection

  • Ethernet Linear Protection Scheme as per ITU-T G.8031
  • Ethernet Ring Protection Scheme as per ITU-T G.8032
  • LCAS protection for Ethernet
  • SNCP, 1+1 MSP for TDM Interfaces

Other Features

  • E1/DS1 Tributary Retiming
  • In-band channel control

Equipment Protection

  • Power Supply Redundancy
  • XC (cross-connect) and Aggregate Card Redundancy
  • E1 tributary card redundancy

Ethernet over SONET Features

  • VCAT as per ITU-T G.707
  • GFP F mapping according to ITU-T G.7041
  • LCAS as per ITU-T G.7042
  • 64ms differential delay
  • Graceful degradation in Signal Fail/ Signal Degrade

Operations & Troubleshooting

  • Performance Monitoring as per G.826 and G.784
  • Remote Software Download
  • User configurable for Local / Remote loop
  • CFM as per 802.1ag
  • Performance statistics for Ethernet & VCGs


  • Network Management System (NMS)
  • Northbound SNMPv2 interface
  • End-to-end management across Valiant POTP family
  • Full Remote Management Capability over TCP/IP network
  • Web based Local / Remote management
  • V.24/V.28 modem interface (for remote Management)


  • SyncE, 1588 v2
  • STMn, E1
  • 2Mbps BITS Clock
  • 2MHz TTL Clock
  • Holdover, Internal


  • Operation
    • Operating Temperature: 0ºC to 50ºC.
    • Relative Humidity: 10% to 90%, Non-condensing.
    • ETSI/EN 300386
    • EN 55022 Class A
    • FCC Part 15 Class A
  • Storage and transport
    • Temperature range: - 25°C to 70°C
    • Humidity: max. 95% (non-condensing)

Application Diagrams

VCL-1400, STM-16 / 64 SDH Multiplexer

Data Sheet

Data Sheet STM-16/64 SDH Multiplexer