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|   STM-1, VCL100CPE (upto 14 E1)   |

|   PRODUCTS   |


The VCL100CPE Service Access Node is an ultra-compact and cost-effective customer premises bandwidth provisioning equipment designed to meet low or medium capacity bandwidth service demands.

This unique product is part of a family of STM-1 Multi-Service Provisioning and Access Nodes from Comarra. As with all products in Comarra family, the Service Access node also supports end-to-end provisioning and management of voice and data services across all the segments of the optical network - from the customer premises to the core. It combines innovative optical networking software with the intelligence of SDH to deliver a flexible solution to today's service providers.

The VCL100CPE can be configured as a Terminal Multiplexer (TMUX) or an Add-Drop Multiplexer (ADM), with E1, E3, DS3 or 10/100 Ethernet Interface service interfaces and trunk interfaces at STM-1 rate. The product has a built in non-blocking cross-connect at VC-3 and VC-12 granularity for efficient traffic grooming. In view of the growing demand for packet services, VCL100CPE provides an Ethernet tributary interface to carry inter-office traffic from corporate LANs, campus networks or from ISPs.

Technical Specifications

Network Topology

  • Linear, Ring, Mesh

Cross Connect

  • 252 x 252 VC-12
  • Fully non-blocking
  • Line-to-Line, Line-to-Tributary, Tributary-to-Line, Tributary-to-Tributary

Order wire support, Alarms and User data Channel

  • E1 / E2 bytes used for Express order wire (Omnibus/Selective calling facilities)
  • Five potential-free outputs and two potential-free inputs
  • F1 byte for user data channel

Network Element Configurations

  • Terminal Multiplexer (TMUX)
  • Add Drop Multiplexer (ADM)

Power Supply

  • -48V DC nominal, -36V to 60V DC or 230V 50Hz AC Power Supply
  • Power consumption less than 35W

Physical Dimensions

  • Dimensions (H x W x D): 44 mm x 445 mm x 270 mm

Aggregate Interfaces

  • 2 x STM-1e/o
  • S1.1, L1.1, L 1.2 (ITU-T G.957 Compliant)

Network Maintenance

  • Element Management System, supports full FCAPS functionality
  • RS-232 port for craft interface
  • In-band control supported using SONET/SDH Overhead bytes
  • E1 management channel with drop facility
  • Alarm Signaling Indicators and External Contacts.


  • Operating Temperature: 0 to 50 C
  • Relative Humidity: 10% to 90%, non-condensing

Tributary Interfaces

  • E1/DS1, E3/DS3
  • STM-1o / STM-1e/E4


  • Higher-order and Lower-order POH, SDH level alarms and performance monitoring as per ITU-T Rec. G826 and G.784
  • Software downloads

Ethernet Interfaces

  • 8 port 10/100 Ethernet
  • LCAS
  • GFP/ X.86
  • Lower and Higher Order Virtual Concatenation
  • Full/half duplex, auto-negotiation

Timing & Synchronization

  • Timing & Synchronization of System (as per ITU-T G. 813)
  • Internal oscillator capable of supplying a ITU-T G.813 compliant Stratum-3 SEC
  • Support of SSM byte
  • Internal & External Timing interfaces: Two E1 BITS interfaces (as per ITU-T G.703)

Others Links:

  STM SDH Multiplexers
  E1 VoIP-GSM Gateways
  VoIP SS7 and C7 Solution
  Echo Cancellers and VQE Solutions
  GSM Gateways / GSM Channel Banks
  E1 and T1 over Ethernet (TDM over IP)
  Digital Access Cross Connect Switch (DACS)
  E1, T1, E3, DS3, Ethernet Converter (IP over TDM)

Technical specifications are subject to change without notice.
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