Allen Nelson
April 30th, 2002, 11:26 AM
Every so often we ship a system with a modem, so we can do remote suport. When it comes time to test the modem, before we ship, there is choas and confusion trying to find two analog direct out lines (The office has a PBX system, and while it's sometimes possilbe to go out through those, it adds an extra layer in trying to troubleshoot a system). Often we wind up having to beg one off of IT (with upsets them) and/or unplug a FAX machine (which upsets Admin).
What I would like to find is a simple box with two phone jacks. You would plug a modem (or phone) into each jack. The box woould generate a dialtone when on ATDT/handset pickup, after some number of tones/pulses(>7), it would try to "ring" the other line (or generate a busy signal if the other line is not hung up.
If the other line picks up after a "ring", it would connect the two lines.
Has anyone heard of such a thing? A Google search on "Modem Tester" found noise testers and modem analyzers. "Telephone Tester" produced similar results (although one circuit diagram for a more manual version of this - no "busy" signal though)
If nothing like this exists, how 'bout one of you EE student lurkers build one for your senior project, and then market it? I can see a use for it, not just in Automation, but in department stores to allow customers to check out sound quality of new phones (I know - everyone's going cellular these days.)
What I would like to find is a simple box with two phone jacks. You would plug a modem (or phone) into each jack. The box woould generate a dialtone when on ATDT/handset pickup, after some number of tones/pulses(>7), it would try to "ring" the other line (or generate a busy signal if the other line is not hung up.
If the other line picks up after a "ring", it would connect the two lines.
Has anyone heard of such a thing? A Google search on "Modem Tester" found noise testers and modem analyzers. "Telephone Tester" produced similar results (although one circuit diagram for a more manual version of this - no "busy" signal though)
If nothing like this exists, how 'bout one of you EE student lurkers build one for your senior project, and then market it? I can see a use for it, not just in Automation, but in department stores to allow customers to check out sound quality of new phones (I know - everyone's going cellular these days.)