Yealink Smart Business Phone MP56 Manual

The Yealink Smart Business Phone MP56 is a modern, feature-rich desk phone designed for professional office environments. It supports HD voice, PoE, multiple SIP accounts, a large color display, Bluetooth connectivity, and integration with popular UC platforms. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Advanced Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Large color LCD display, Handset, Ethernet ports, Headset jack, USB port, Bluetooth capability, Volume keys, Navigation keys.

Feature	Description
HD Voice	Wideband audio for crystal-clear calls
PoE Support	Powered via Ethernet (IEEE 802.3af)
Dual Ethernet Ports	LAN and PC ports for pass-through connectivity
Large Color Display	High-resolution screen for call information and menus
Bluetooth	Connect wireless headsets or mobile phones
USB Port	For future expansions or Wi-Fi dongle
Headset Port	3.5mm jack for wired headset connection
Multiple SIP Accounts	Support for up to 6 SIP accounts
UC Integration	Compatible with Microsoft Teams, Zoom, etc.
Speakerphone	Full-duplex hands-free speaker

Installation

Unpack and inspect contents. Place on stable, flat surface.

Connect to Network: Use Ethernet cable to connect LAN port to router/switch. Use PC port to connect to a computer if needed.
Power the Phone: Use included power adapter OR connect via PoE (Power over Ethernet).
Connect Handset: Plug coiled handset cord into the dedicated jack.
Connect Headset: Plug wired headset into 3.5mm headset jack if desired.

WARNING! Use only the provided or approved power adapter. Ensure cables are not pinched or damaged.

First-Time Setup

Power on phone; follow on-screen prompts.

Network Boot: Phone will attempt to obtain IP address via DHCP.
Check Network Status: Press the "OK" key, navigate to Status > Network to verify IP.
Configure SIP Account: Enter account details (SIP server, username, password) provided by your service provider via Menu > Account.
Set Language & Time: In Settings menu, select preferred language and configure time zone/ NTP server.
Test Call: Make a test call to verify audio quality and registration.

CAUTION! Keep phone away from direct heat sources and liquids.

Specifications

Display: 4.3-inch color LCD with backlight.
Audio Codecs: G.722, G.711, G.729, Opus.
Network: Dual 10/100/1000 Mbps Ethernet ports, IEEE 802.3af PoE.
Wireless: Bluetooth 4.2 (for headset/profile sharing).
Connectors: Handset, Headset (3.5mm), USB 2.0, LAN, PC.
Protocols: SIP (RFC3261), TLS, SRTP, IPv4/IPv6.
Power Source: 100-240V AC, 50/60Hz adapter OR PoE.
Operating Temp: 0°C to 40°C (32°F to 104°F).

Controls and Settings

Access menu via "OK" key or dedicated Menu button. Front Keys: MUTE, HEADSET, SPEAKERPHONE, NAVIGATION keys, VOLUME keys.

Soft Keys & Display: Context-sensitive soft keys for Call, Transfer, Conference, Hold, etc.

Basic Settings: Language, Time/Date, Ringtone selection, Screen brightness. Account Settings: SIP server, authentication, display name. Audio Settings: Handset volume, speaker volume, headset volume, acoustic echo cancellation. Network Settings: Static/DHCP, VLAN, QoS.

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: Wired to headset jack. Bluetooth: Pair via Menu > Bluetooth.

Turn off phone before connecting wired accessories if possible.
Match cables to correct ports.
For Bluetooth, enable pairing mode on headset, then search on phone.

Tip: Use high-quality Ethernet cables for optimal network performance.

Advanced Features

Supports call forwarding, call waiting, three-way conference, call transfer, auto-answer.

Make a Call: Lift handset or press Speakerphone, dial number.
Answer a Call: Press Answer soft key, lift handset, or press Speakerphone.
Call Hold: Press Hold key during a call.
Call Transfer: Press Transfer, dial target number, press Transfer again.
Three-Way Conference: During a call, press Conference, dial third party, press Conference again.
Call Forwarding: Configure via Menu > Features > Call Forward.
Directory & Call History: Access via dedicated keys or Menu.
Speed Dial: Assign numbers to programmable keys.

WARNING! Do not disassemble the phone. Refer service to qualified personnel.

Accessibility Features

Visual Alerts: Flashing LED for missed calls/messages. Audio Adjustments: Independent volume controls for handset, speaker, ringer. High-Contrast Display: Adjustable screen settings for better visibility.

Care & Cleaning

Unplug power before cleaning. Use a soft, slightly damp cloth. Do not use abrasive cleaners or sprays.

CAUTION! Keep liquids away from the device. Do not clean with the power connected.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for residential use. CE, RCM, UKCA marked. This device complies with relevant RF exposure limits. Copyright © Yealink Network Technology Co., Ltd. For support, visit www.yealink.com or contact your authorized reseller.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Loose cable / Adapter / PoE	Check power adapter connection; try different Ethernet port with PoE; verify switch PoE capability.
No dial tone	Network / Account config	Check Ethernet link lights; verify SIP account is registered; contact service provider.
Poor audio quality	Network / Cable / Settings	Check for network congestion; replace handset/headset cable; adjust audio settings (Menu > Audio).
Display is blank	Power / Brightness	Check power; adjust screen brightness (Menu > Settings > Display).
Bluetooth not pairing	Distance / Interference	Ensure headset is in pairing mode; bring devices within 1 meter; reduce interference from other wireless devices.

Reset: Press and hold the "OK" key for 10 seconds during boot for factory reset (use with caution).

Service: www.yealink.com/support; contact your system administrator or service provider.