Chapter 2 - System Hardware Q 29Model OptionsPanasonic offers a wide variety of options for telephones so that you can select the one that is justright for you. All phones are digital, and all except for the DSLT have a microphone and speaker forHands-Free Answerback and Off-Hook Monitoring (the ability to conduct calls on-speaker withoutlifting the handset). All display phones are “speakerphones,” meaning they have additional built-incircuitry for background-noise cancellation during outside calls. The Small-Display phones have a 2-line LCD; the Large-Display phone has a 7-line LCD.Also available on all phones except DSLTs are Flexible Function (FF) keys, which have dual-coloredLEDs and can be programmed only in system programming under FF4. And the EM/24 and DSS/72units offer additional panels of FF-keys that you can add-on to any digital station.The following table shows some of the options available with the different models.Station Telephone ModelsModel DescriptionsDigital Single Line Telephone (DSLT)Gray only (VB-41200)Provides single-line service on a digitaltelephone. Buttons include hold, on/off,auto, redial, flash and conference. Largemessage-waiting light. Slide controls forvolume adjustment. Does not supporthands-free answerback on intercom.Requires one digital port. Does not includeuser tray.16-Key Standard PhoneGray (VB-44210A-G)Black (VB-44210A-B)Provides 6 flexible feature/line keys (dualcolored LED) and 10 personal speed dialkeys. Supports hands-free answerback onintercom, offhook voice announce, andheadsets. Requires one digital port. Wall-mountable. Includes user tray and elevationsupports.Description No. ofFF-KeysHFAB-ICMSpeakerphone Display Gray BlackDigital Single Line Telephone (DSLT) 0 16-Key Standard Phone 6 22-Key Standard Phone 12 22-Key Small-Display Phone 12 22-Key Small-Display Phone withVoice Response12 22-Key Large-Display Phone 12 34-Key Standard Phone 24 34-Key Small-Display Phone 24 24-Key Expansion Module (EM/24) 24 72-Key DSS/BLF Module (DSS/72) 72 The DSLT (VB-41200)DIGITAL BUSINESS SYSTEMNAME NAMENo. No.13 DEF2ABC4 GHI15 JKL 6 MNO7 PRS 8 TUV 9 WXY#0 OPER*