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Frame
Relay
TWICEŽ Frame
Relay complements PacketWare's comprehensive line of portable
communication software products to provide access to Frame Relay
networks.
TWICEŽ Frame Relay customers receive an
unprecedented Frame Relay network certification guarantee. Our
clients benefit from their investment in the PacketWare technology
because they know they can rely on us for a complete range of
protocol software including X-25,
TCP-IP and
PPP.
TWICEŽ Frame
Relay is based on 17 years experience developing performance
communication software to the open Streams architecture with the
quality guaranteed by PacketWare's rigorous development methodology,
audited and compliant with both government and laboratory
standards.
Features and Benefits
- Full STREAMS compatibility for
implementation in a native UNIX System V Release 3 or 4
kernel
- Portable Streams Environment (PSE) for
platforms which do not support a native Streams environment
- Full compatibility with USL's
published interfaces (DLPI), ANSI T1S1, UIT-T, and Frame Relay
Forum specifications
- Full dynamic run-time configuration
per interface
- Standard flow control handling through
FECN and BECN bits and CLLM frames
- Local Management Interface for both
Permanent Virtual Circuits (PVC) and Switched Virtual Circuits
(SVC)
- Full support for RFC 1490 for protocol
encapsulation over Frame Relay, including ARP encapsulation and
segmenting and reassembly
- Extensive local network management
functions (configuration, line monitoring, statistics, and alarms
handling)
- Comprehensive porting and testing
Toolkit
Technical Specifications
Frame Relay Core
Driver
- Streams Multiplexing Driver
- Connection Less and Connection
Oriented DLPI user interfaces
- Local network management interface for
configuration, Line Monitoring, Statistics, and Alarms
- Local Management Interfaces (LMI) with
standard interface as per UIT-T Q.922 Annex A
- Support for standard and custom LMIs
at the Upper Layers (PVC and SVC LMIs provided)
- Frame structure as per UIT-T Q.922
Annex A
- Support for all UIT-T defined DLCI
formats with configurable encoding on 10, 16, 17, or 23
bits
- Full flow control handling through
FECN and BECN bits monitoring as per UIT-T Q.922 Appendix I
- Additional flow control management
through Consolidated Link Layer Management (CLLM) frames as per
UIT-T Q.922 Annex A (section A.7) and Appendix I (section
I.2.3)
- Automatic negotiation of Data Link
parameters per DLCI as per UIT-T Q.922 Appendix II
- Protocol encapsulation as per Frame
Relay Forum agreement FRF.3, ANSI T1.617a-1993 Annex F, and RFC
1490
- SDU segmenting and reassembly as per
RFC 1490 and ANSI T1.617a-1993
- Address resolution for ARP and RARP
protocol encapsulation as per RFC 1490
PVC
LMI
- Separate Streams multiplexing driver
for PVC management
- Support all mandatory and optional
capabilities defined in UIT-T Q.933 Annex A
- Compliant with the Frame Relay Forum
agreement FRF.1 subset
- Configurable to use the ANSI
T1.617a-1993, Annex D procedures for operation with older
switching equipment
- Periodic polling, link integrity
verification, reporting on new PVCs and PVC availability
- Support for the optional
bi-directional network procedures
- Configurable for DTE or DCE
operations
- Support for the N391, N392, and N393
counters and the T391 and T393 timers, each configurable on a line
by line basis
- Fully compliant with extensions to 3
and 4 bytes DLCI encoding
SVC
LMI
- Separate Streams multiplexing driver
for SVC management
- Implements the subset of Q.933
specified by the Frame Relay Forum implementation agreement FRF.4,
January 1994
- Fully compliant with extensions to 3
and 4 bytes DLCI encoding
- Configurable for DTE or DCE
operations
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