NEXUS Communications

NEXUS-I

The NEXUS I communications package can be used to link your VAX or Alpha computers to any number of portable tele-transaction computers such as those provided by the Telxon Corporation.

The NEXUS-I package consists of an easy-to-use menu program and a communications program that runs detached and hibernates while waiting for a transmission from the portable units. Data received from the portable unit is stored in a numbered file for further processing. Appropriate messages are generated to notify the users on the host computer of the created file name, header information from the transmission, and the number of transmission errors.

If the number of transmission errors exceeds a preset number specified on the host computer, NEXUS-I will generate easy to recognize tones on the telephone so that the remote user can retransmit without any operator intervention on the host. By adding a speech-aided modem, NEXUS-I can generate appropriate voice messages instead of tones.

An unlimited number of communication processes can be created on the host for simultaneous transmissions from several portable units. Extensive error checking is used to guarantee data integrity and appropriate informational messages are generated for each transmission. The hardware link can be either a direct connection or through the Switched Telephone Network. Communications can be controlled by a user of the host computer or can be completely automatic.

NEXUS-II

The NEXUS-II communications package can be used to link your VAX or Alpha computers to any number of Telxon units capable of two-way communications. The communication protocol is based on Telxon's Point-To-Point two-way Asynchronous Protocol. Data can be downloaded into the Telxon unit from a user-specified file on the host computer, or data can be received and stored in a user-specified file.

NEXUS-II will enable your host computer to:

An unlimited number of communication processes can be created on the host computer for simultaneous communications to several Telxon units. Extensive error checking is used to guarantee data integrity, and activity logs are created for each task as well as for each communications process. AS with NEXUS-I, the hardware link can be either a direct connection or through the Switched Telephone Network. A user of the host computer can control communications or they can be completely automatic.