Browse Prior Art Database

Automatic Configuration of a Multichannel Network

IP.com Disclosure Number: IPCOM000050654D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Caron, F: AUTHOR

Abstract

The communication network shown above includes a main network having a local multichannel modem 1 connected to a remote multichannel modem 2. Each modem is connected to a number of terminals through individual channels to be multiplexed over a single transmission channel.

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Automatic Configuration of a Multichannel Network

The communication network shown above includes a main network having a local multichannel modem 1 connected to a remote multichannel modem 2. Each modem is connected to a number of terminals through individual channels to be multiplexed over a single transmission channel.

Each channel is provided with an interface, and at initial power on, both local and remote modems will scan their respective interfaces. Within the interfaces the system will have previously noted: 1) the presence of any terminal ready for transmitting (e.g., by detecting DTR "ON" according to the CCITT V24 recommendation, circuit 108/2); and/or 2) the presence of an eventual secondary modem attached to a remote channel and ready for transmitting. In that specific case, a presence indicator would be turned "ON" in the corresponding remote modem interface, and, in addition, the DSR lead would be "ON" (see circuit 107 of V24 recommendation); and, 3) the data rate of the secondary modems.

The local and remote modems will both exchange the above-noted information with each other. Then they will determine the active channel configuration to be selected based on the following rules: A channel is considered to be active only when both of its ends are active (see conditions 1, 2 and 3 above).

Whenever one end of a channel is connected to a modem, the modem data rate will determine the channel rate.

Both local and remote multichannel modems will thus nece...