Products MSF250

MSF250
2.5 Gbps Multi-Service Framer

The MSF250 is a highly integrated Multi-Service Framer device capable of mapping both Telecom and Datacom traffic into protected SONET/SDH transport payloads. The MSF250 is equipped with multiple voice, leased line and data service interfaces - such as 10/100 Ethernet, Gigabit Ethernet, SPI-3, DS1/E1, and DS3/E3. The SONET/SDH lines range from OC-3 / STM-1 to OC-48/STM-16. Ethernet over SONET/SDH (EoS) is supported through Virtual Concatenation (VC) with Link Capacity Adjustment Scheme (LCAS), with simultaneous use of mixed High-Order (STS/VC paths) and Low-Order (VT/VC paths).

Interfaces

• Equipment / client side:
• Up to 2 Gigabit Ethernet via GMII
• Up to 8 Ethernet / Fast Ethernet via SMII
• 24-channel OIF compliant SPI-3 connection to packet processor/switch
• 28/21 x DS1/E1
• 3 x DS3/E3
• 3 x STS-1/VC-3 or 1 x STS-3c/VC-4 byte wide multi-drop Telecom Bus
• Line / trunk side:
• Protected OC-48/12/3 or STM-16/4/1

• Network Access Equipment ( e.g. remote terminals and modems)
• Telecom/Datacom Aggregation Equipment ( e.g. mspp, micromspp)
• Multi-Service Customer Premises (e.g. modem ) or Customer Located Equipment ( e.g micromspp)
• Test Equipment
• for additional applications please visit our solutions catalog.

• Support for SONET/SDH linear 1+1 APS and UPSR/SNCP with dual line interface
• Full SONET/SDH Transport Overhead (TOH) processing, with configurable serial extraction and insertion of full TOH or only DCC portion
• Full SONET/SDH high and low order path termination
• Full TU-3/TUG-3 and TUG-2/TUG-3 support
• Static or dynamic bandwidth allocation for data interfaces:
  • SPI-3: support for up to 24 logical channels with individual flow control
  • Ethernet / Fast Ethernet / Gigabit Ethernet flow control
• Packet encapsulation using GFP, X.86 LAPS and RFC1662 PPP
• Support for up to 24 Virtual Concatenation channels (VC) with optional Link Capacity Adjustment Scheme (LCAS)
  • Up to 48 STS-1/VC-3 or STS-3c/VC-4 high order paths
  • Up to 336 VT1.5 or 252 VC-12 (622 Mbps) low order paths
  • Up to 200 μsec differential delay compensation with internal buffer, or up to 250 msec with external SDRAM
• Complete VT1.5/VC-12 path termination and origination for 28/21 DS1/E1 framers
• 3 DS3/E3 framers (M23 or C-bit parity modes) for DS3/E3 to STS/VC mapping
• Single M13/E13 multiplexer for DS1/E1 to DS3/E3 to STS/VC mapping
• Multi-drop Telecom Bus interface for connection to supplemental DS1/E1 or DS3/E3 framers
• Simultaneous support of all services up to 2.5 Gbps aggregate rate
• Generic 16-bit microprocessor interface

The MSF250 is a highly integrated device capable of mapping both Telecom and Datacom traffic into SONET/SDH transport payloads. On the line side, the MSF250 supports protected OC-48/STM-16, OC-12/STM-4 and OC-3/STM-1 interfaces. On the client side, Ethernet (10/100/1000 Mbps), SPI-3 (POS-PHY Level 3), DS1/E1 and DS3/E3 interfaces are available. In addition, a Telecom Bus interface is provided to support additional client Telecom or Datacom connections.

The MSF250 maps up to 2.5 Gbps of traffic from a variety of client side interfaces. Traffic destined for the SONET/SDH trunk from any client side interface, including the Telecom Bus, can be assigned at VT/VC and STS/VC granularities. Any client side payload data can be mapped into any legal combination of VT1.5/VC-12, STS-1/VC-3 or STS-Nc/VC-4-Xc positions of the SONET/SDH payload.

The MSF250 performs all SONET/SDH section and line terminating functions including normal or enhanced framing, scrambling/descrambling, parity generation and monitoring, remote line error indication processing, section trace message generation and extraction, orderwire and user channel insertion and extraction. Serial insertion and extraction of all section and line data communication channels, and synchronization message insertion and extraction is also supported. Linear line protection schemes are supported by performing error detection, signal degrade or failure detection based on provisionable bit error rate thresholds, and automatic protection switching information extraction and validation. Line status is consolidated and presented to software in a manner that facilitates rapid identification of faults.

The MSF250 supports full SONET/SDH pointer processing of any combination of STS-1/VC-3 and concatenated payloads up to 2.5 Gbps. Path overhead monitoring and automatic detection of path level defects for UPSR/SNCP operation, and path trace message generation and monitoring are provided.

Packet mapping, with static or dynamic bandwidth allocation, is supported for up to two Gigabit Ethernet GMII interfaces, up to eight 10/100 Mbps Ethernet SMII interfaces, and one OIF SPI-3 8/32 bit interface. Packets encapsulated using GFP, X.86 LAPS or RFC1662 PPP are mapped to a SONET/SDH transport payload. Up to 24 logical channels with individual flow control are supported using the SPI-3 interface. Backpressure on the Ethernet ports is implemented with IEEE 802.3x flow control with programmable trigger thresholds. The Ethernet interfaces provide all necessary counters to support SNMP and RMON/MIB-II implementations. The SPI-3 interface provides a 32-bit packet counter.

Virtual Concatenation (VC) with LCAS is supported on Ethernet and SPI-3 interfaces and provides 24 virtual concatenation groups (VCGs). A total of up to 48 high order paths (STS-1/VC-3, STS-3c/VC-4) and up to 336 low order paths (VT1.5/VC-12) are available across all VCGs. An internal buffer supports differential delay compensation of up to 200µs, while an external SDRAM interface is used to provide differential delay up to 250ms.

Up to 28/21 DS1/E1s can be directly connected from external Line Interface Units (LIUs) and either mapped into VT1.5/VC-12s or, via M13/E13, into a DS3/E3 and then into an STS-1/VC-3 path. DS1/E1 framers are provided in both directions to allow full fault isolation on asynchronously mapped VT/VCs. On DS1 interfaces, the Super Frame (SF), Extended Super Frame (ESF) and SLC-96 framing formats are supported, while E1 interfaces support G.704 basic and CRC-4 framing formats with full performance monitoring, and line and facility loopback, test pattern generation.

Up to 3 DS3/E3s can also be mapped into any available STS-1/VC-3. Full performance monitoring is provided in all DS3/E3 framers. Additional DS1/E1s or DS3/E3s can be added via the STS-3c/VC-4 or 3xSTS-1/VC-3 Telecom Bus interface.

For sample applications, please visit our solutions catalog.

The MSF250 is a member of the SOLAR family of products. For more information, please consult the SOLAR Product Brief available from your Galazar Networks representative.

Galazar Networks, the Galazar Networks logo, SOLAR, ASSURED are registered trademarks of Galazar Networks Inc. The information found in this document is subject to change without notice. This material is provided on an "as is" basis. Galazar Networks Inc. makes no representation or warranties of any kind, expressed or implied arising out of the application or use of any product described herein, neither does it convey any license under its patent rights, copyrights, or trade secrets nor the rights of others. This document is the property of Galazar Networks Inc. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form of any means, electronic, photographic, or otherwise, or used as the basis for manufacture or sale of any items without the prior written consent of Galazar Networks Inc.

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