ATT/Vtech, SB67138, 80-7959-00, 4-Line Corded/Cordless Small Business System w/Extendable Range & Push-to-Talk Intercom AT&T - With Answering Machine - 4-line - With Speakerphone - With Voicemail - With Conference Calling 50 name/number caller ID history Music on hold 10 speed dial and intercom number locations Handset, speakerphone, headset and ringer volume control Entry removal button DECT 6.0 Zero Blind Slot Digital technology 4 lighted line indicators Push-to-talk for instant and easy communication between handsets Clearspeak dial-in-bse speakerphone Handset speakerphone 100 name/number phonebook directory Large ighted display Last 10 number redial Caller ID/call waiting capability Voicemail waiting indicator Call screening Call intercept Remote access Message retrieval from handset Message time/day stamp Voice prompts Memo recording