Browse Prior Art Database

Circuit Slot Set-Up And Release Protocol

IP.com Disclosure Number: IPCOM000100842D
Original Publication Date: 1990-Jun-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Bonnet, R: AUTHOR [+5]

Abstract

This article relates to a protocol which allows circuit slots to be set up or released in a frame which is used to transport asynchronous and synchronous types of traffic.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 55% of the total text.

Circuit Slot Set-Up And Release Protocol

       This article relates to a protocol which allows circuit
slots to be set up or released in a frame which is used to transport
asynchronous and synchronous types of traffic.

      The frame is dynamically constructed according to the traffic
requirements. When a call is detected, a circuit slot is set up in
the frame by taking this bandwidth to the packet flow. When the call
ends, this bandwidth is released and given back to the packet flow.
To perform this operation, both ends of the transmission medium must
understand the protocol, in order to correctly decode the information
transported in the medium frames.

      The procedure to set up and release a call makes use of a
multi- layer protocol: a connection handler protocol and a frame
handler protocol.

      The connection handler protocol is carried by the packet flow.
The frame handler protocol is carried out by the opening flag of the
frame.

      When a change of the frame configuration is needed either to
set up or to release a circuit slot, the following commands are
exchanged:

      Step 1. The connection handler sends a PATH REQUEST packet to
its counterpart, indicating which slot on a given link is to be
changed either into circuit or into packet.

      Step 2. The connection handler tells its FRAME HANDLER through
a command (MODIFY slave) that a change will occur on this slot, and
to stay slave, i.e., wait for a command to change i...