Mitel 5312 IP Phone Manual

The Mitel 5312 IP Phone is a feature-rich business telephone designed for use with Mitel IP telephony platforms. It offers high-quality audio, programmable line/feature keys, a backlit display, support for Power over Ethernet (PoE), and integration with corporate directories and voicemail. Below are key sections covering features, installation, configuration, operation, and troubleshooting.

Features at a Glance

Key components: Handset with noise-canceling microphone, backlit LCD display, programmable keys, navigation cluster, Ethernet ports, and power adapter input.

Installation & Physical Setup

Unpack the phone and inspect contents. Choose a stable, well-ventilated location.

1. Connect to Network: Plug Ethernet cable from your network switch into the LAN port on the phone.
2. Connect a Computer (Optional): Use a second Ethernet cable from the PC port to your computer.
3. Power the Phone: Use PoE from the switch or connect the included power adapter to the DC port.
4. Connect Handset: Plug the coiled handset cord into the jack marked with a handset icon.
5. Connect Headset (Optional): Plug an optional headset into the RJ-22 headset port.

WARNING! Use only the provided or approved power adapter. Ensure cables are routed to avoid tripping hazards.

First-Time Configuration

Once powered, the phone will boot and attempt to obtain network configuration.

1. Obtain IP Address: The phone will request an IP via DHCP by default. Check the screen or use ** to view the IP address.
2. Server Assignment: It will contact the configured provisioning server (e.g., MiVoice Business) for its configuration.
3. Verify Registration: The display will show your extension number and name once registered.
4. Set Preferences: Use the Options menu to set language, time/date format, ring tones, and volume levels.

CAUTION! Do not unplug the phone during boot or firmware upgrade. Configuration is typically managed by your system administrator.

Technical Specifications

• Protocols: SIP or Mitel proprietary (MiNet).
• Audio Codecs: G.711 (A-law/μ-law), G.729A/B, G.722 (wideband).
• Network: 10/100 Mbps Ethernet, VLAN (802.1Q) support, QoS (DiffServ/TOS).
• Power Consumption: PoE Class 2 (max 6.5W) or 48V DC adapter.
• Display: 2 x 24 character backlit LCD.
• Programmable Keys: 6 keys with dual-color LEDs.
• Environmental: Operating: 0°C to 40°C; Humidity: 10% to 95% non-condensing.
• Compliance: FCC Part 15, ICES-003, CE, RCM.

Controls & Interface

Access features via the physical keys and on-screen menus. Front Panel: Handset, MUTE, HEADSET, NAVIGATION CLUSTER, programmable keys, VOLUME keys.

Key Functions: - **MUTE:** Toggles microphone mute (LED on when muted). - **HEADSET:** Toggles between handset and headset mode. - **NAVIGATION:** Up/Down to scroll menus, Left/Right for adjustments, **SELECT** to choose. - **VOLUME +/-:** Adjusts volume for handset, speaker, or ringer based on active state. - **PROGRAMMABLE KEYS:** Default as line keys; can be assigned to speed dial, call park, BLF, etc.

On-Screen Menus: Press the **Options** softkey or ** to access settings for Ring Tones, Display Contrast, Network Status, and System Information.

Network Connectivity

The phone has two Ethernet ports to support a daisy-chain connection to a computer.

1. Ensure the network switch port is configured for VoIP (correct VLAN and QoS if required).
2. For PoE, verify the switch provides IEEE 802.3af power.
3. To check network status, press ** then navigate to **Network Status** to view IP, MAC, and server info.
4. For static IP configuration, contact your system administrator as it is typically done via provisioning server.

Tip: Use quality CAT5e or higher cables to ensure reliable connectivity and power delivery.

Basic Call Handling

Making, answering, and managing calls.

1. Make a Call: Lift handset or press **SPEAKER**, dial number, or press a programmed speed dial key.
2. Answer a Call: Lift handset, press **SPEAKER**, or press the flashing line key.
3. End a Call: Hang up handset or press **SPEAKER** again.
4. Hold/Retrieve: Press **HOLD** softkey or assigned key. Press the held line key to retrieve.
5. Transfer: During a call, press **TRANSFER**, dial target number, announce, then press **TRANSFER** again to complete.
6. Conference: During a call, press **CONF**, dial second party, press **CONF** again to merge.
7. Redial: Press **REDIAL** or the ** softkey to call the last dialed number.

WARNING! Emergency calls (e.g., 911) may require specific configuration. Confirm with your administrator.

Advanced Features

Programmable Keys: Can be configured for Speed Dial, Call Park, Busy Lamp Field (BLF), Do Not Disturb (DND), etc., via administrator web interface. Voicemail: Press the **MSG** key or dial your voicemail access number. Call Forwarding: Activate via **CFWD** softkey or dialing feature codes (e.g., *72). Directory: Access corporate directory via **DIR** softkey. Headset Operation: Press **HEADSET** key to activate headset mode; LED illuminates.

Care & Maintenance

Unplug power before cleaning. Use a soft, dry cloth to wipe the casing and display. Do not use liquid or aerosol cleaners.

CAUTION! Avoid exposure to extreme temperatures, moisture, or direct sunlight. Do not disassemble the phone.

Regulatory & Compliance

FCC Part 15: Class A digital device. Complies with Canadian ICES-003. This device may not cause harmful interference and must accept any interference received. Contains FCC ID: [To be filled by manufacturer]. For full compliance statements and warranty information, visit www.mitel.com or contact Mitel support.

Troubleshooting

Reset: To reboot, unplug power and reconnect. For factory reset (clears all settings), press and hold **7** and **#** while powering on (admin only).

Support: Contact your system administrator or visit www.mitel.com/support. Phone firmware and configuration are typically managed centrally.