sparky (05/11/82)
Ven-Tel Model 212 Plus I recently attempted to use the Ven-Tel 212 Plus "conversational" modem on our Dataswitch running Version 2.3. My desire was to create a single "directory" that would allow both dial "in" and "out" capa- bility with the same set of data sets, namely the Ven-Tel's. My motives were to eliminate the need for Develcon's ACU board( its current implemen- tation is a poor compliance with the RS-366 interface, especially if you like "shared" acu operation. Also, I wanted to get better utilization of our prensent 16 line hunt group. Unless I am missing the boat, the Ven-Tel will not allow for this dual capability. Reasons: The Ven-Tel raises "carrier detect" (CD) when it is powered up, and not in response to actual carrier being sensed. If a user who has connected to the Ven-Tel via the Dataswitch drops the connection, the line will go into the "PU" state making it unusable by the next user. Fortunately when DTR goes down, the Ven-Tel will hang up. If one plays games with the Dataswitch/Ven-Tel interface by tying DTR to CD at the Dataswitch then the above problem is "fixed" but if someone dials in to the Dataswitch via the Ven-Tel then upon disconnecting by just hanging up which is usually the case, the Dataswitch will never see this and consequently that user would never be logged off unless a ^d or internal computer timeout was initiated. (We users are so lazy aren't we!!!!!!) Does anyone know of any other "conversational" modems that might fit my bill or am I doing it all wrong with the Ven-Tel???? Norm Thompson BTL-CB 8-353-2291 1-614-860-2291 TNX