cisco phone manual model 3842 13 1086

The Cisco Phone Model 3842 13 1086 is a business IP phone designed for enterprise environments, featuring a high-resolution display, support for multiple lines, Power over Ethernet (PoE), integrated Gigabit Ethernet switch, advanced audio codecs, and compatibility with Cisco Unified Communications Manager (CUCM). Below are key sections covering safety, features, installation, configuration, 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: High-resolution LCD display, Handset, Speakerphone, Ethernet ports, Power adapter port, Volume controls, Programmable line keys.

Feature	Description
Display	High-resolution backlit LCD for call information and menus
Handset	Wideband audio support for clear voice quality
Speakerphone	Full-duplex speakerphone for hands-free conversations
Ethernet Ports	Two 10/100/1000 Mbps ports with integrated switch
Power over Ethernet (PoE)	IEEE 802.3af compliant; powered via network cable
Volume Controls	Separate controls for handset, speaker, and ringer
Programmable Line Keys	Configurable buttons for lines, speed dials, and features
Headset Port	3.5mm jack for wired headset connectivity
Hold/Resume	Place calls on hold and resume with single button
Conference	Support for multi-party conference calls

Installation

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

Connect to network: Use Ethernet cable to connect LAN port to network switch.
Connect computer (optional): Use second Ethernet port to daisy-chain computer.
Connect handset: Plug handset cord into dedicated jack.
Connect power: Use included power adapter if PoE is not available.
Connect headset (optional): Plug into 3.5mm headset jack.

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

First-Time Setup

Power on phone; follow on-screen prompts and network provisioning.

Network registration: Phone will attempt to obtain IP address via DHCP.
CUCM registration: Enter extension and authentication credentials if prompted.
Configure basic settings: Use phone menu to set language, time zone, and ring tone.
Test call functionality: Make test call to verify audio quality and connectivity.

CAUTION! Do not expose to liquids or extreme temperatures during setup.

Specifications

Model: Cisco 3842 13 1086 IP Phone.
Display: High-resolution grayscale or color LCD (model dependent).
Network: Dual 10/100/1000 Mbps Ethernet ports with PoE (802.3af).
Audio Codecs: G.711, G.729, G.722 for wideband audio.
Protocols: SIP, SCCP (Skinny Client Control Protocol).
Power: 48V DC via PoE or external power adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Compliance: FCC Part 15, UL, CE.

Controls and Settings

Access settings via phone menu button or web interface. Front Panel: LCD, Soft keys, Navigation cluster, Hold, Conference, Transfer, Volume controls.

Menu Navigation: Use navigation button to scroll through options; press Select to choose.

Basic Settings: Language, Time format, Ring tone selection, Display contrast. Network Settings: IP configuration (DHCP/Static), VLAN settings, QoS configuration. Phone Settings: Line configuration, Speed dial setup, Call forwarding, Do Not Disturb. Audio Settings: Handset volume, Speaker volume, Ringer volume, Audio codec preference.

Connecting Devices

Network: Ethernet cable to switch. Computer: Daisy-chain via second Ethernet port. Headset: 3.5mm jack.

Turn off phone before connecting additional devices.
Match cables to appropriate ports (e.g., Ethernet to network port).
Verify connectivity by checking link lights on Ethernet ports.

Tip: Use shielded cables in environments with high electromagnetic interference.

Advanced Features

Supports advanced call handling and integration features.

Call Hold/Resume: Press Hold button; resume by selecting held call.
Call Transfer: Press Transfer, enter destination number, complete transfer.
Conference Calls: Press Conference, dial participants, press Conference again to connect.
Speed Dial: Program frequently dialed numbers to programmable keys.
Call Forwarding: Enable via phone menu or soft key.
Do Not Disturb: Activate to silence ringer and send calls to voicemail.
Web Interface: Access advanced configuration via phone's IP address.
Firmware Upgrade: Perform via TFTP or from CUCM administration.

WARNING! Do not interrupt firmware upgrade process; may cause phone malfunction.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Independent volume controls for handset, speaker, and ringer. High-Contrast Display: Option for improved visibility. TTY Compatibility: Supports teletypewriter devices when configured.

Care & Cleaning

Unplug from power before cleaning. Use slightly damp, lint-free cloth; avoid abrasive cleaners.

CAUTION! Do not use alcohol, ammonia, or other harsh chemicals on display or casing.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for commercial environments. Copyright © Cisco Systems, Inc.; trademarks owned by Cisco. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	PoE/Power adapter	Check Ethernet cable for PoE; verify power adapter connection.
No network connectivity	Cable/DHCP	Check cable connections; verify DHCP server is reachable.
No audio	Volume/Handset	Adjust volume controls; check handset connection; verify audio codec settings.
Display blank	Power/Backlight	Check power; adjust display contrast via settings menu.
Calls not connecting	Registration/Network	Verify phone is registered to CUCM; check network configuration.

Reset: Press and hold # key during boot for factory reset (use caution).

Service: Contact Cisco TAC; refer to www.cisco.com for warranty information.