Yealink SIP-T48S 16-Line PoE IP Phone 7" Color Touchscreen GigE SIP VoIP - NEW For Sale

Yealink T48S 16-Line PoE IP Phone 7" Color Touchscreen GigE SIP VoIP SIP-T48S

The Yealink SIP-T48S is a 16-line SIP desk phone with a 7-inch color touchscreen (800x480), dual Gigabit Ethernet ports, and PoE power input (IEEE 802.3af). It runs open SIP and requires network provisioning via a SIP server or hosted VoIP provider before use. Audio features include Yealink Optima HD Voice and OPUS codec across handset, speakerphone, and headset paths.

Yealink T48S – Key Features & Benefits

• 7" Color Touchscreen (800x480): Full touchscreen navigation for contacts, call status, and menus — 29 programmable on-screen touch keys with LED indicators for call status.
• 16 SIP Accounts: Supports up to 16 simultaneous SIP accounts for multi-line call handling.
• Dual Gigabit Ethernet (PoE): LAN + PC passthrough at 10/100/1000 Mbps; powered via IEEE 802.3af PoE — no adapter required when PoE switch is present.
• Yealink Optima HD Voice & OPUS Codec: Wideband audio across handset, speakerphone, and headset paths; OPUS codec adapts to available bandwidth.
• Full-Duplex Speakerphone: HAC-compliant handset; full-duplex speakerphone with echo cancellation.
• 1x USB 2.0 Port: For optional Bluetooth dongle (BT40/BT41) or Wi-Fi dongle (WF40/WF50); Bluetooth and Wi-Fi are not built-in and require the dongle.
• Open SIP / Web Provisioning: Runs open SIP with TLS/SRTP security; centralized provisioning via Yealink RPS, HTTP/HTTPS/TFTP; DHCP or static IP.
• Expandable with EXP40 Modules: Supports up to 6 Yealink EXP40 expansion modules (sold separately) for up to 240 additional programmable keys.

Yealink T48S – Technical Specifications

• Model: SIP-T48S
• Display: 7-inch color TFT touchscreen, 800 x 480
• SIP Accounts: Up to 16
• Programmable Keys: 29 on-screen touch keys
• Network Ports: 2x Gigabit Ethernet RJ-45 — LAN + PC passthrough (10/100/1000 Mbps)
• PoE: IEEE 802.3af; AC adapter sold separately
• Wi-Fi: Via optional USB dongle (WF40/WF50) — not built-in
• Bluetooth: Via optional USB dongle (BT40/BT41) — not built-in
• USB Port: 1x USB 2.0
• Headset Ports: RJ-9 (analog); RJ-12 for EHS adapter or expansion module
• Conferencing: 3-way local
• Codecs: G.711(A/μ), G.722, G.723.1, G.726, G.729AB, iLBC, OPUS
• Security: TLS, SRTP, IEEE 802.1X
• Protocol: SIP
• Power: PoE (IEEE 802.3af); AC adapter sold separately
• Expansion Modules: Up to 6x Yealink EXP40 (sold separately)
• SIP Compatibility: May be compatible with open-SIP platforms including 3CX, BroadSoft, Asterisk, Genesys, RingCentral, Vonage, 8x8; confirm feature support with your provider

Yealink T48S – Frequently Asked Questions (FAQ)

• Does this unit include a power adapter?
  No. This unit is PoE-powered (IEEE 802.3af) and ships without an AC adapter. A PoE switch or injector is required. An optional AC adapter is sold separately by Yealink.
• Does the T48S have built-in Bluetooth or Wi-Fi?
  No. Bluetooth and Wi-Fi are not built-in. They require an optional USB dongle inserted into the USB 2.0 port: Yealink BT40/BT41 for Bluetooth, or WF40/WF50 for Wi-Fi (sold separately).
• What phone systems does the T48S work with?
  The T48S runs open SIP and may be compatible with platforms including 3CX, BroadSoft, Asterisk, Genesys, RingCentral, Vonage, and 8x8. Feature availability varies by platform and firmware — confirm support with your provider before purchasing.
• What is included with this unit?
  This unit is sold Like New and includes the phone handset, handset cord, desk stand, and Ethernet cable. No AC power adapter is included — PoE is required.

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