MSP E/T 1-, 2-, 4-, 8-Span PCM Interface

The MSP-E/T E1/T1/J1 PCM interface is a general-purpose interface for medium-density host-based telephony media processing, allowing a BladeWare system to interface with PSTN end offices and PBXs. The MSP-E/T is a half-height PCI or PCI Express board supporting either 1, 2, 4, or 8 DS-1 spans using only one expansion-card slot.

Network timing can be passed from a network-connected interface to any other spans for a fully synchronized system. E1 and T1 can be mixed in any combination, supporting the implementation of channel-bank functionality with BladeWare’s channel-switching feature.

Comprehensive line-encoding, framing, and link-layer support, such as EuroISDN allow the OEM to address the broadest possible geographic markets. Technical certifications are listed on the Commetrex Website.

In addition to BladeWare, the MSP-E/T is also available with the optional OpenMedia media-processing software environment. OpenMedia is a comprehensive multi-stream software environment that permits media-processing vendors to develop to one open, portable environment, rather than for multiple proprietary environments that lack the potential of broad market coverage. With the OpenMedia SDK the MSP E/T becomes an open hardware-software environment for the media-processing software developer.


  • Supported by BladeWare
  • Up to 8 spans in one PCI or PCI Express slot
  • 2U form factor (120 mmx55 mm)
  • Autosense with 5 and 3.3 volt busses
  • PCI 2.2 compliant
  • RJ-11 cables included
  • 32-bit bus master for 132 Mbytes/sec
  • Temp range of 0-50 C
  • One RJ-45 per span except for the MSP-8E/T, which puts two spans on one RJ-45
  • Temp range of 0-50 C
  • Temp range of 0-50 C
  • Support for Windows and Linux
  • OpenMedia streams framework
  • Software-defined media


  • Deployment Flexibility
  • Multiple media per board
  • Productive development
  • Improved strategic options
  • Configuration flexibility
  • Broad market coverage
  • Support for high-speed modems
  • Easily develop proprietary media processing technologies

System Overview

The MSP E/T is optimized for higher-density PSTN applications requiring from 23-240 ports of voice and or fax on a BladeWare system. PCM data are managed by a PGA and transferred between the board and the host computer over a PCI or PCI Express plug-and-play interface.


  • FCC Part 15 Class A, FCC Part 68, CISPR 22, EN 55022, Class A, CIPSR 24, AFIC-2016, IEC 60950.
  • Technical certifications in Russia, Malaysia, and Australia.

High-level Protocols

IP/PX over Frame Relay/PPP/HDLC/X.25, X.25 over Frame Relay (Annex G), BSC over X.25 (D.T. and TOP), SNA over X.25, PPPoE, PPPoA, IP over ATM, EuroISDN.

Related Publications

  • MSP-FX S/O Product Bulletin
  • MSP BRI Product Bulletin
  • OpenMedia SDK Product Bulletin
  • BladeWare HMP Product Bulletin
  • PowerFax for BladeWare Product Bulletin


Compatibility PCI 2.2 and PCI Express
Warranty Lifetime
PCI Bus 32-bit bus master DMA at 132-Mbytes/sec.
Form factor 2U 120 mm x 55 mm
Initialization PCI Plug-and-Play
Connectors Four, RJ-11 for telco lines
Processor FPGA
Power 0.8 amp peak, 300 MA operational at 3.3 or 5 volts (autosense)
Temp Range 0-50 C
Cables Shipped with RJ45-terminated cables
BRI Interfaces Two FXS or FXO analog trunks per daughtercard