Next generation SDH multiplexers to provide multiple services from E1 tributaries (software configurable as E1) and 1 E3/DS3 tributaries (software configurable as E3 or DS3) or an 8 port 10/100Base-T Ethernet interfaces.

The STM-1, VCL100CPE (with E1) and with one tributary interface card (E3 / DS3 / Ethernet) is an ultra-compact and cost-effective customer premises bandwidth provisioning STM-1 SDH multiplexer equipment designed to meet low or medium capacity bandwidth service demands.

Data Sheet stm-1, 28 E1

Following tributary choices are available:

  • E1s (standard part of equipment / chassis) with (any one of the following) E3 or DS3 or 10/100 BaseT Ethernet
  • The chassis is 19" rack or wall mountable as per customer requirements.

This unique product 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.



  • Cost-effective multi-service box for customer premises
  • Support for terminal multiplexer and add-drop multiplexer configurations
  • Support for E1 / DS1, E3 / DS3 and 10/100BaseT tributaries
  • Support for MSP and SNCP protection.
  • Complete integration into NMS for a true end-to-end network solution
  • -48V DC powered
  • 19" rack or wall mountable


  • Power failure interrupt and power hold for graceful shutdown
  • Laser failure detection
  • Laser on/off control for safety requirements
  • Real time clock (RTC)
  • Disk and Flash for non-volatile storage of configuration
  • LED test button / signal
  • Ethernet and craft interfaces for NMS / External control channel
  • Order-wire capability
  • Alarm contacts
  • Provision for separate System Reset and Processor Reset
  • External power inputs
  • E1 drops or E3 / DS3 or 10/100 Ethernet tributaries

Redundancy and Protection

  • Software redundancy for terminating and restarting critical processes with no service disruption
  • High network resiliency using robust protection mechanisms like 1+1 MSP and SNCP/li>

Related Links

Data Sheet stm-1, 28E1 MTBF and Budgets stm-1, 28E1 Technical Specifications System Hardware Applications Comparison Network Element Software