CMP.WERNER@UTEXAS-20.ARPA (10/17/83)
From: Werner Uhrig <CMP.WERNER@UTEXAS-20.ARPA> I just acquired a modem, INTERTEL MCS1200 very cheaply, which I am trying to get to work and would appreciate some help with. Is there someone out there who either has one, has access to a manual for it, or can give advice with the followig problem. Note: I only have a 2 page copy of specs and description, and am rather ignorant with hardware. Description: sync or async modem, operating at 1200 or 1800 Baud. DataRate: sync at 1200 on unconditioned Type 3002 lines and 1800 on C2 conditioned Type 3002 lines. async operation up to 1200 bps on uncond. 3002 and 1800 ... Data Format: serial sync or async (strap selected) Op. Mode: half or full duplex, 4wire lines Carrier: switched or constant Modulation: FSK Clear-to-Send-Delay: 0 85 + 5ms or 60 + 5ms (strap selected) Transmit Level: 0dBm to -12dBm adjustable by calib. potentiometer Receive Level: +5dBm to -35dBm etc..... These are the setup and problem symptoms: - I hook red and green phone cables to one pair of line connectors and connect it to the second pair with a jumper-wire - I connect via RS-232 cable to my H/Z-100 - the indicator lites test ok - the switch to have the modem "self-test" is "frozen" and can't be moved to cause a self-test. - the indicator lights come on ok, but when I would expect to see the RTS and CTS lights indicate a "conversation", nothing happens. the lites on are: PWR, DCD, RXD. - the jumpers look "right" as far as I can tell without manual, but the modem must have gotten wet as all are corroded (that's why I got it cheap in the first place) Anyone with advice out there ? Werner (UUCP: {ihnp4,ut-sally,decvax!allegra,ucbvax!nbires} !ut-ngp!werner or: { ut-sally , ut-ngp } !utastro!werner ARPA: werner@utexas-20 -------