FEATURES
• Monolithic device which integrates 28 T1 framers, 21 E1 framers, a SONET/SDH VT1.5/V2/TU-11/TU-12 bit asynchronous mapper, a full featured M13 multiplexer with DS-3 framer, and a SONET/SDH DS-3 mapper for terminating DS-3 multiplexed T1 streams, SONET/SDH mapped T1 streams or SONET/SDH mapped E1 streams.
• Seven T1 modes of operation:
   1. Up to 28 T1 streams mapped as bit asynchronous VT1.5 virtual tributaries into a STS-1 SPE or TU-11 tributary units into a STM-1/VC3 or TUG3 from a STM-1/VC4.
   2. Single STS-1, AU3 or TUG3 Bit Asynchronous VT1.5 or TU-11 Mapper with ingress or egress link monitoring per T1 tributary.
   3. Up to 28 T1 streams M13 multiplexed into a serial DS-3.
   4. Up to 28 T1 streams M13 multiplexed into a DS-3; the DS-3 is asynchronously mapped into a STS-1/STM-2/STM-0 SPE.
   5. DS-3 M13 Multiplexer with ingress or egress link monitoring per T1 tributary.
   6. Up to 28 DS-3 multiplexed T1 streams are mapped as bit asynchronous VT1.5 virtual tributaries or TU-11 tributary units, providing a transmultiplexing function between DS-3 and SONET/SDH.
   7. Up to 21 T1 streams mapped as bit asynchronous VT2 virtual tributaries into a STS-1 SPE or TU-12 tributary units into a STM-1/VC3 or TUG3 from a STM-1/VC4.

APPLICATIONS
• Channelized and Unchannelized DS-3 Internet interfaces for Remote Access Concentrators, Routers and Switches.
• Channelized and Unchannelized DS-3 Frame Relay Interfaces.
• M13 Mux/Demux Equipment.
• SONET-SDH Add/Drop and Terminal Multiplexers.
• Integrated Services Platform.