Yealink T42U IP Desk Phone — Grade A, Unlocked for All GSM Carriers

The Yealink T42U is a business-class SIP desk phone in black, offered here as Grade A (cosmetic condition equivalent to new). This unit is unlocked for use on US GSM carriers and supports standard SIP-based VoIP deployments with broad PBX compatibility.

• Physical dimensions: 188 mm × 186 mm × 51 mm (W × D × H); handset length 175 mm; net weight 720 g.
• Display: 2.3-inch graphical LCD, 132 × 64 pixels, backlit.
• Audio & codecs: HD voice with Yealink Optima HD; G.722, G.711(A/μ), G.726, G.723.1, G.729AB supported; full-duplex speakerphone with AEC.
• Lines & provisioning: 6 SIP accounts; XML phone book, LDAP, auto-provision via HTTP/HTTPS/TFTP/FTP.
• Connectivity: Two 10/100 Mbps Ethernet ports with integrated PoE (802.3af) support; RJ9 handset and RJ9 headset ports; EHS support via compatible EHS cable.
• Power: PoE (IEEE 802.3af) or external 5V DC adapter (input rating printed on supplied adapter).
• Materials & manufacturing: ABS housing and handset; injection-molded components; manufactured by Yealink Network Technology Co., Ltd.
• Certifications & standards: FCC Part 15, CE, RoHS compliant; SIP (RFC 3261) and related IETF standards.
• Included contents & accessories: Yealink T42U main unit, handset, 1.8 m handset cord (RJ9), Ethernet cable (1.5 m, Cat5e), adjustable desk stand, power adapter, quick start guide. A charging cable is included.

This Grade A device is guaranteed to look like a new device per our grading standards. If you require network compatibility confirmation, please verify SIP and GSM carrier settings against your provider’s requirements using the model number.