PC Accessory: 2 To 1 Telephone Switchbox, RJ11 - Ziotek

Office Product: 2-LINE On/Off Switch for Telephone and Any Device connected to a 2-line Phone Jack. The Telephone Remote Interrupt Control Kit 2. The "TRICK 2". Amazon Exclusive! - Grandpa and Granny Co.

CE: GE 29438GE2 Two-line Deluxe Speakerphone with Data Port - GE

CE: AT&T 2-Line Switch (White) - AT&T

Office Product: Cisco SPA514G 4-Line IP Phone with 2-Port Gigabit Ethernet Switch, PoE, and LCD Display by Cisco - CISCO SYSTEMS - ENTERPRISE

CE: iHold A2LPro "All-In-One" Professional 2-Line Music On Hold Player system for all regular corded or cordless 2 line or 4 line telephones or PBX key system phones / Music On Hold adapter plus mp3 USB On-Hold Music player in one device - Innovative Telecom

PC Accessory: Installerparts RJ11 6P4C Line Splitter, Line1/Line2/Line1+Line2 - InstallerParts

Speakers: StarTech.com VS222HDQ 2 X 2 Inches HDMI Matrix Switch with Automatic and Priority Switching - STARTECH.COM

Home Improvement: 2 Way Phone Line Switch By Radishack - Radishack

Speakers: Automatic Two-Way Source Selector - Sound Activated - MCM Custom Audio

Personal Computer: Black Box 2-to-1 CAT6 10-GbE Manual Switch (ABC) - BLACKBOX NETWORK SERVICE

Speakers: AVIOR 4 x 2 HD Audio/Video Switch Splitter with RS-232 Support (GHSW8242) - IOGEAR

Office Product: 1-LINE On/Off Switch for Telephone, Fax, DSL Modem and Any Device connected to a 1-line Phone Jack. The Telephone Remote Interrupt Control Kit. The "TRICK". Amazon Exclusive! - Grandpa and Granny Co.

Office Product: Cisco SPA504G 4-Line IP Phone with 2-Port Switch, PoE and LCD Display, Silver, Grey - Cisco

Personal Computer: ZyXEL 24-Port Layer 2 FE Managed PoE+ Switch with 4x Dual Personality GbE Uplinks (ES3500-24HP) - ZYXEL

Home Improvement: uxcell? Black OFF/ON Bedroom In Line Cord Switch AC 250V 6A - uxcell

Personal Computer: StarTech.com 10 Port L2 Managed Gigabit Ethernet Switch with 2 Open SFP Slots, Rack Mountable, Layer 2 (IES101002SFP) - Startech

PC Accessory: Raritan Dominion KX II-101 V2 - KVM switch - PS/2, USB - 1 x KVM port(s) - 1 local user - 1 IP use * - RARITAN

CE: Niles AVS2 Black (FG00241) Line Level A-B Switcher - Niles

Personal Computer: CISCO SYSTEMS 4-Line IP Phone with 2-Port Gigabit Ethernet Switch (SPA514G) - CISCO SYSTEMS - ENTERPRISE

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