GENERAL DESCRIPTION
The VSC9115 is a 2.5 Gb/s multi-service SONET/SDH data mapping device that supports both contiguously concatenated and virtually concatenated transport channels.
  
FEATURES
► 48 STS-1/VC-3, 48 TU-3/VC-3, or 16 STS-3c/VC-4 Virtual
    Concatenation Groups
► Link Capacity Adjustment Scheme (LCAS) with Hitless Adds and
    Removes, and Fault Isolation
► External DDR 64 bit SDRAM for Diverse Routing Applications with
    Differential Delays of up to 108 ms
► Flexible Payload Processing for Generic Framing Procedure (GFP)
    with Support for Several Interfacing Formats including Ethernet Frames
► Supports HDLC-Like Framing: PoS - RFC2615, LAPS - X.85, and X.86
► System Packet Interface Level 4 (SPI-4), Phase 2, 16-Bit Interface
► Dual 2.5 Gb/s Serial, STS-48/STM-16-like Backplane Interfaces or
    Dual 4 x 622 Serial STS-12/STM-4-like Backplane Interfaces with
    Performance Monitoring for Connection to Working and Protection
    TSIs
► Two-Level Pointer Generation and Interpretation for SDH Mapping
    of TU-3/VC-3 into AU-4
► Channelized Payload Mapping into AU-4/TU-3/VC-3, STS-1/VC-3,
    STS-3c/VC-4, STS-12c/VC-4-4c, STS-48c/VC-4-16c, or Virtual Groups
    Composed of AU-4/TU-3/VC-3s, STS-1/VC-3s, or STS-3c/VC-4s
► Extensive Performance Monitoring Features
   
APPLICATIONS
► Point-to-Point Linear Configurations Such as a Multi-Service Router/
    Switch or Point-to-Point Transport
► SONET/SDH ADM and TSI Switching Systems
► Gigabit Ethernet Transport Applications Utilizing LAPS or GFP Frame
    Encapsulations
► Point-to-point Packet-over-SONET (PoS) Router Applications
► Data Channels or Payloads Can be Shared Among up to 48 Transport
    Channels by Using Contiguous Concatenation and/or Virtual Concatenation