DSX TelephonesDSX-40 Hardware Manual Components ◆ 1ComponentsComponentsDSX TelephonesDSX Telephones22-Button Display Telephone with SpeakerphoneThe 22-Button Display Telephone features a large 3 line-by-24 character alphanumeric display with 4 Interac-tive Soft Keys for intuitive feature access. It also provides 10 Personal Speed Dial bin keys, 12 programmableFeature Keys and 12 fixed function keys for streamlined operation. Additionally, this telephone offers a headsetjack and built-in speakerphone. Unique features include dual LEDs, a Ring/Message Lamp (to show ringing,Caller ID, and voice mail messages), built-in wall mounting, and an innovative two position angle adjustment.34-Button Backlit Display Telephone with SpeakerphoneThe 34-Button Display Telephone features a large 3 line-by-24 character backlit alphanumeric display with4 Interactive Soft Keys for intuitive feature access. It also provides 10 Personal Speed Dial bin keys, 24 pro-grammable Feature Keys and 12 fixed function keys for streamlined operation. Additionally, this telephoneoffers a backlit keypad, a headset jack, and built-in speakerphone. Unique features include dual LEDs, aRing/Message Lamp (to show ringing, Caller ID, and voice mail messages), built-in wall mounting, and aninnovative two position angle adjustment.At a GlanceP/Ns 1090020 (Black) and 1090025 (White)Display: 3 line x 24 character Speakerphone: Built-in, half-duplexSoft Keys: 4 Wall Mount: Built-inFeature Keys: 12 Angle Adjustment: 2 position built-inFixed Function Keys: 12 Backlit: NoSpeed Dial Bin Keys: 10 Dual LEDs: YesHeadset jack: RJ-10 built-in (standard handset type)At a GlanceP/Ns 1090021 (Black) and 1090026 (White)Display: 3 line x 24 character Speakerphone: Built-in, half-duplexSoft Keys: 4 Wall Mount: Built-inFeature Keys: 24 Angle Adjustment: 2 position built-inFixed Function Keys: 12 Backlit: YesSpeed Dial Bin Keys: 10 Dual LEDs: YesHeadset jack: RJ-10 built-in (standard handset type)