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Part Number: PM8315
Description: The PM8315 High Density T1/E1 Framer with Integrated VT/TU Mapper and M13 Multiplexer (TEMUX) is a feature-rich device ...
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PM8315
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General Description
PM8315 General Description
The PM8315 High Density T1/E1 Framer with Integrated VT/TU Mapper and M13 Multiplexer (TEMUX) is a feature-rich device for use in any applications requiring high density link termination over T1 channelized DS3 or T1 and E1 channelized SONET/SDH facilities.
The TEMUX supports asynchronous multiplexing and demultiplexing of 28 DS1s into a DS3 signal as specified by ANSI T1.107 and Bell Communications Research TR-TSY-000009. It supports bit asynchronous mapping and demapping of 28 T1s or 21 E1s into SONET/SDH as specified by ANSI T1.105, Bell Communications Research GR-253-CORE and ITU-T Recommendation G.707. The TEMUX also supports mapping of 21 T1s into SDH via TU-12s. Up to 28 Transparent VT1.5s and TU-11s or 21 Transparent VT2s and TU-12s can be transferred between the SONET/SDH interface and the SBI bus interface.
This device can also be configured as a DS3 framer, providing external access to the full DS3 payload, or a VT/TU mapper, providing access to unframed 1.544Mb/s and 2.048Mb/s links.
The TEMUX can be used as a SONET/SDH VT/TU mapper or M13 multiplexer with performance monitoring in either the ingress or egress direction for up to 28 T1s or 21 E1s. In this configuration the T1 and E1 transmit framers are disabled and either the ingress or egress T1 or E1 signals are routed to the T1 or E1 framers for performance monitoring purposes.
Each of the T1 and E1 framers and transmitters is independently software configurable, allowing timing master and feature selection without changes to external wiring. This device is able to operate in T1 mode or E1 mode but not a mix of T1 and E1 modes.
In the ingress direction, each of the 28 T1 framers is either demultiplexed from a channelized DS3 or extracted from SONET VT1.5, TU-11 or TU-12 mapped bus. Each T1 framer can be configured to frame to either of the common DS1 signal formats: (SF, ESF) or to be bypassed (unframed mode). Each T1 framer detects and indicates the presence of Yellow and AIS patterns and also integrates Yellow, Red, and AIS alarms.
T1 performance monitoring with accumulation of CRC-6 errors, framing bit errors, out-of-frame events, and changes of frame alignment is provided. The TEMUX also detects the presence of ESF bit oriented codes, and detects and terminates HDLC messages on the ESF data link. The HDLC messages are terminated in a 128 byte FIFO. An elastic store that optionally supports slip buffering and adaptation to backplane timing is provided, as is a signaling
PM8315 Features
• Integrates 28 T1 framers, 21 E1 framers, a SONET/SDH VT1.5/VT2/TU11/TU12 bit asynchronous mapper, a full featured M13 multiplexer with DS3 framer, and a SONET/SDH DS3 mapper in a single monolithic device for terminating DS3 multiplexed T1 streams, SONET/SDH mapped T1 streams or SONET/SDH mapped E1 streams.
• Seven T1 modes of operation:
• 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 TU-11 tributary units into a TUG3 in a STM-1/VC4.
• Single STS-1, AU3 or TUG3 Bit Asynchronous VT1.5 or TU-11 Mapper with ingress or egress per tributary link monitoring.
• Up to 28 T1 streams M13 multiplexed into a serial DS3.
• Up to 28 T1 streams M13 multiplexed into a DS3, the DS3 is asynchronously mapped into a STS-1 SPE.
• DS3 M13 Multiplexer with ingress or egress per link monitoring.
• Up to 28 DS3 multiplexed T1 streams are mapped as bit asynchronous VT1.5 virtual tributaries or TU-11 tributary units, providing a transmultiplexing ("transmux") function between DS3 and SONET/SDH.
• Up to 21 T1 streams mapped as bit asynchronous TU-12 tributary units into a STM-1/VC3 or TUG3 from a STM-1/VC4.
PM8315 Typical Application
• High density T1 interfaces for multiplexers, multi-service switches, routers and digital modems.
• High density E1 interfaces for multiplexers, multi-service switches, routers and digital modems.
• Frame Relay switches and access devices (FRADS)
• SONET/SDH Add Drop Multiplexers
• SONET/SDH Terminal Multiplexers
• M23 Based M13 Multiplexer
• C-Bit Parity Based M13 Multiplexer
• Channelized and Unchannelized DS3 Frame Relay Interfaces
• High density E1 interfaces for multiplexers, multi-service switches, routers and digital modems.
• Frame Relay switches and access devices (FRADS)
• SONET/SDH Add Drop Multiplexers
• SONET/SDH Terminal Multiplexers
• M23 Based M13 Multiplexer
• C-Bit Parity Based M13 Multiplexer
• Channelized and Unchannelized DS3 Frame Relay Interfaces
PM8315
PDF/DataSheet Download
- Datasheet: PM8315
- File Size: 3097128 KB
- Manufacturer: PMC [PMC-Sierra, Inc]
- Click here to Download
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