Mitel 5312 Phone Manual

The Mitel 5312 is a feature-rich IP phone designed for business environments, offering clear audio quality, programmable keys, support for multiple lines, and integration with Mitel communications platforms. It features a backlit display, built-in speakerphone, headset compatibility, and Ethernet connectivity. 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. Using Phone Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Backlit LCD display, Handset, Programmable keys, Speakerphone, Headset jack, Ethernet ports.

Feature	Description
LCD Display	2-line backlit display for call information and menus
Programmable Keys	Configurable for speed dial, line appearances, or features
Speakerphone	Full-duplex for hands-free conversations
Headset Jack	For connecting a compatible headset
Ethernet Ports	Two 10/100 Mbps ports for network and PC connection
Message Waiting Indicator	LED for visual voicemail notification
Volume Controls	For handset, speaker, and ringer volume adjustment
MUTE	Mutes the microphone during a call
HOLD	Places an active call on hold
NAVIGATION Keys	Arrow keys for menu navigation and scrolling

Installation

Unpack and inspect contents. Place on stable surface near network outlet.

Connect to Network: Plug Ethernet cable from network switch/router into the LAN port.
Connect PC (Optional): Use second Ethernet port to connect your computer.
Connect Handset: Plug coiled handset cord into the handset jack.
Connect Power: Use provided power adapter or Power over Ethernet (PoE).

WARNING! Use only approved power adapter. Ensure cables are securely connected.

First-Time Setup

Power on phone; it will attempt to boot and register with the phone system.

Network Configuration: Typically automatic via DHCP. Check with administrator for static IP if needed.
System Registration: Enter extension number and credentials as provided by administrator.
Set Language: In SETTINGS menu, select preferred language (default ENGLISH).
Adjust Audio: Use volume keys to set handset, speaker, and ringer levels.

CAUTION! Do not place phone in direct sunlight or near heat sources.

Specifications

Display: 2-line, backlit LCD.
Network: 10/100 Mbps Ethernet, supports Power over Ethernet (802.3af).
Audio: Wideband audio support, built-in speakerphone, headset compatible.
Protocols: SIP, Mitel proprietary protocols.
Programmable Keys: Up to 10 configurable keys.
Power Source: 48V DC power adapter or PoE.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Supported Features: Call hold, transfer, conference, forward, voicemail.

Controls and Settings

Access menu via MENU key. Front Panel: Handset, LCD, soft keys, navigation keys, volume controls.

Key Functions: HOLD, TRANSFER, CONFERENCE, MUTE, HEADSET, SPEAKER, VOICEMAIL, MENU.

Settings: Time/Date, Language, Ring Tones, Display Contrast, Network Configuration. Features: Call Forward, Do Not Disturb, Speed Dial programming. Audio: Adjust handset, speaker, ringer volume independently.

Connecting Devices

Network: LAN port to switch. PC: Use PC port for pass-through connection. Headset: Plug into headset jack.

Turn off phone before connecting devices if using power adapter.
Match cables to correct ports (Ethernet to LAN, handset to handset jack).
For PoE, ensure network switch provides adequate power.

Tip: Use certified Ethernet cables for reliable connectivity.

Using Phone Features

Supports basic and advanced telephony features.

Make a Call: Lift handset or press SPEAKER, dial number.
Answer a Call: Lift handset, press SPEAKER, or press corresponding line key.
Hold: Press HOLD key during a call.
Transfer: Press TRANSFER, dial target number, announce call, press TRANSFER again.
Conference: During a call, press CONFERENCE, dial second party, press CONFERENCE again to merge.
Voicemail: Press VOICEMAIL key or dial voicemail access number.
Program Speed Dial: Menu > Features > Speed Dial, assign number to a programmable key.
Call Forward: Menu > Features > Call Forward, enable and set destination number.

WARNING! Do not use liquid cleaners on the phone. Keep liquids away.

Accessibility Features

Adjustable Ringer Volume: Set via volume keys or menu. Visual Alerts: Message waiting LED. Hearing Aid Compatible: Handset is HAC rated. Large Font Display: Adjustable via menu settings.

Care & Cleaning

Unplug power before cleaning. Use slightly damp, lint-free cloth. Do not use abrasive cleaners or sprays.

CAUTION! Avoid getting moisture into openings. Never submerge the phone.

Regulatory Information

FCC Part 15 & 68: Complies with US regulations for digital devices and telephone equipment. CE Mark: Conforms to European directives. Industry Canada CS-03 compliant. Copyright © Mitel Networks Corporation. For support, visit www.mitel.com or contact your system administrator.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power/no display	Power source/cable	Check power adapter connection; try different outlet; verify PoE switch is enabled.
No network connectivity	Ethernet cable/configuration	Reseat Ethernet cable; check LAN link light; verify IP configuration with admin.
No dial tone	Registration/line	Check phone is registered to system; verify line is active with administrator.
Poor audio quality	Network/connections	Check network for congestion; reseat handset cord; adjust volume settings.
Keys not responding	Software/firmware	Restart phone; contact administrator for firmware update.

Reset: Menu > Settings > System > Reset to factory defaults (use caution).

Service: Contact your system administrator or Mitel support.