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Virtual Console offers both Basic
Rate ISDN (BRI ISDN) and Primary Rate ISDN (PRI
ISDN) source
code stacks are among the telecom protocol stacks
that can be licensed to developers.
Customers can license following protocols:
Q.921 LAPD Q.931 LAPB LAPM individually or as
an integrated stack.
Virtual Console provides well-proven
source code to accelerate the development and
conformance
testing of in-band and off-band signaling products.
Protocol source code is architected for applications,
both embedded and host-based, in which
performance and code size are important
For:
- Base stations
- Customer Premise Equipment
- Intelligent networks
- Signaling transfer points
- Switches
- Telephony
- Test Equipment
Features:
ITU-T V.42, Error-correcting procedures for DCEs
using asynchronous-to-synchronous conversion
(LAPM) ITU-T Q.921, ISDN Data Link Layer (LAPD)
LAPD and LAPM Platform:
- LAPD and LAPM control
- Platform-independent C implementation
- Low level (HDLC framing, CRC computation/checks)
- high-performance optimized TI c54 assembly
language
- Clearly documented interfaces, easily customizable
- Fully event-driven architecture, allowing
easy integration
- Supports multiple channels
- Configurable protocol parameters (timers,
window size, error handling)
- Connection statistics
- Low-level events (each data or control frame
received or transmitted, protocol events, etc.)
reporting support for easy system and channel
diagnostics. Compact binary log format; log
decoding utility (to convert compact log to
a human-readable text representation) is
provided with source codes.
- TEI management procedures as per Q.921
- Optional REJ frame support
- Optional link-adaptive timeouts computation
ITU-T Q.931, ISDN USER-NETWORK INTERFACE LAYER
3 SPECIFICATION FOR BASIC
CALL CONTROL (with U.S. signaling extensions).
- Basic call control as per standard "European"
Q.931
- National ISDN-1 ("NI-1") signaling
modification
- (two logical channels per device, two SPID
numbers, etc.)
- 5ESS custom signaling modification (as per
Lucent Technologies "235-900-343 Issue
4",
"5ESS-2000 Switch Custom ISDN Basic Rate
Interface Specification").
- DMS-100 signaling modification
- Fully platform-independent C implementation
- Optional diagnostic output (key call setup
events and/or errors printed in
text on diagnostic console).
For additional information please contact sales@vconsole.com
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