Nortel Meridian 1 Description

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Nortel Meridian 1 Description Manual pdf 91 page image

Data options Page 91 of 104Meridian 1 Telephones Description and SpecificationsMeridian Communications Adapter (MCA)The Meridian Communications Adapter (MCA) replaced the MeridianProgrammable Data Adapter (MPDA) with X11 release 18 and offersenhanced capability over the MPDA. An MCA can be configured as anMPDA for use with releases earlier than release 18.Functional descriptionThe MCA mounts within the telephone (see Figure 3) and allowssynchronous and asynchronous ASCII terminals, and personal computers tobe connected to the telephone using an RS-232-C or V.35 interface on aDB-25 connector. With release 14 and later, the MCA allows synchronousapplications (DTEs such as video conferencing equipment and Group IV faxunits) to be connected to the telephone.Releases 14 through 17 allow access to data functions through the keypadonly. However, release 18 and later allow access to data functions via boththe keypad and service change in LD 11.Asynchronous mode features supported by the MCA include the following:• Asynchronous transmission at up to 19.2 kbps (autobaud)• Enhanced Hayes commands, including upper- and lower-case dialing,voice call origination through AT dialing, hang-up data call, and on-linedisconnect of voice call• Script file capability that allows the MCA to learn a dial-up and log onsequence that can be played back to automatically access a host orservice• Voice Call Origination (VCO)• DCE mode• Autodial• Ring Again• Speed Call• Autobaud and Autoparity Detect• Modem Pool Calling• Host/Terminal Mode