After some sleep, google gave me some additional information: Wade said before that MWI is done by FSK and voltage-type MWI is not supported: http://lists.digium.com/pipermail/asterisk-users/2003-August/018426.html
For the existing MWI to work, voltage on the line needs to drop for a fraction of a second - I think this can happen in asterisk, probably as part of the do_monitor block where vmwi_generate is called. Does that make any sense? We have about 40 2500 sets... If I have to replace the phones themselves, does anyone have a model they'd suggest for replacing an Avaya 2500 set that supports FSK MWI? Steve On Fri, 26 Mar 2004, Steve Creel wrote: >I have L36, and Onhook Messaging is enabled. Does anyone have a reference >for MWI (other than that stuff that turns up on google)? >>Make sure that Onhook Messaging is enabled on the Adtran FXS ports. I'd >>also suggest upgrading to the latest 750 firmware (L36) as it fixes some >>specific MWI issues. >> >>-wade >>I have a bunch of existing AT&T/Lucent/Avaya 2500YMGP sets with LED >>message waiting lights. Do I stand any chance of getting the Adtrans to >>light these? >> >>What I know so far: >> >>When you pick up the telephone, the LED flashes. >>If you plug two telephones in, picking up one flashes the LED on the >>other. >>Hanging the telephone up will flash the LED. >>Incoming calls flash the LED. >>Stutter dialtone is there and functioning. >>Debugs in chan_zap reveal that do_monitor sees there are messages, and >>tries to update MWI status. >>The Adtran is putting out 50 volts when on hook (either with or without >>a message waiting). If 'On Hook Messaging' is enabled (I think this is >>for ADSI ?), the voltage is closer to 40v. _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users