cisco phone 3842 13 1086 manual

The Cisco Phone 3842 13 1086 is a business-grade IP phone designed for reliable voice communication in enterprise environments. It features a high-resolution display, support for multiple lines, Power over Ethernet (PoE), built-in Gigabit Ethernet switch, headset connectivity, and integration with Cisco Unified Communications Manager. 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: High-resolution LCD display, Handset, Keypad, Ethernet ports, Headset jack, Speakerphone.

Feature	Description
Display	High-resolution backlit LCD for call information and menus
Handset	Standard handset with noise-canceling microphone
Keypad	12-button dial pad with additional feature keys
Ethernet Ports	Two 10/100/1000 Mbps ports (LAN and PC)
Headset Jack	For connecting a wired headset
Speakerphone	Full-duplex speakerphone for hands-free calls
Power over Ethernet (PoE)	Receives power through Ethernet cable (802.3af)
Programmable Line Keys	Configurable buttons for speed dial or line appearances
Volume Control	Dedicated buttons for handset, speaker, and ringer volume
Messages Button	Access voicemail and message waiting indicator

Installation

Unpack and inspect contents. Choose a stable, flat surface near a network outlet.

Connect to Network: Plug Ethernet cable from switch into the LAN port on the phone.
Connect Computer (Optional): Use second Ethernet cable from PC port to your computer.
Connect Handset: Plug coiled handset cord into handset jack.
Power the Phone: Use PoE from switch or connect optional power adapter to power port.
Connect Headset (Optional): Plug headset into headset jack.

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

First-Time Setup

Phone will boot and attempt to register with Cisco Unified Communications Manager (CUCM).

Network Registration: Ensure phone receives IP address via DHCP. Check display for registration status.
Configure Extension: Administrator must assign phone number and extension in CUCM.
Set Language: Press Settings button, navigate to User Preferences > Language.
Adjust Ringer: Use volume control during incoming call or in Settings > Sound.
Set Date/Time: Typically synchronized from network; verify in Settings.

CAUTION! Do not unplug during firmware upgrade. Contact system administrator for configuration.

Specifications

Model: Cisco IP Phone 3842 13 1086.
Display: High-resolution grayscale or color LCD (model dependent).
Network: 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE.
Protocols: SIP (Session Initiation Protocol), SCCP (Skinny Client Control Protocol).
Audio Codecs: G.711, G.729, G.722 (wideband).
Power Source: 802.3af PoE or 48V DC power adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Compatibility: Cisco Unified Communications Manager 8.0 and later.

Controls and Settings

Access menu via Settings button. Navigation pad: UP, DOWN, LEFT, RIGHT, SELECT.

Key Buttons: Hold, Transfer, Conference, Messages, Settings, Headset, Mute, Speakerphone.

Settings Menu: User Preferences (Language, Ringtone, Screen Contrast), Network Configuration (view IP, subnet), Device Configuration (line settings, speed dials), Status (firmware, call statistics). Volume Control: Separate controls for handset, speaker, and ringer. Ringtone Selection: Choose from multiple built-in tones.

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: Standard 2.5mm or USB (model dependent).

Ensure phone is powered off before connecting cables.
Match Ethernet cables to correct ports (LAN vs PC).
For headset, consult administrator for compatibility and configuration.

Tip: Use quality CAT5e or CAT6 cables for Gigabit Ethernet performance.

Using Phone Features

Supports basic and advanced telephony features.

Make Call: Lift handset or press Speakerphone, dial number, press Dial softkey or wait.
Answer Call: Lift handset, press Speakerphone, or press Answer softkey.
Hold: Press Hold button during active call.
Transfer: Press Transfer, dial target number, announce call, press Transfer again.
Conference: Press Conference during first call, dial second party, press Conference again.
Voicemail: Press Messages button, follow prompts.
Redial: Press Redial softkey or dial ** (varies by configuration).
Call Forward: Access via Settings > Call Forward or programmable softkey.

WARNING! Do not expose phone to liquids. Keep vents clear for proper cooling.

Accessibility Features

Visual Alert: Flashing LED for incoming calls. Hearing Aid Compatible (HAC): Handset rated for HAC. Ringer Volume: Adjustable up to 90 dBA. Large Font: Option for larger on-screen text in settings.

Care & Cleaning

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

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

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. CE Mark: Conforms to European directives. Industry Canada ICES-003: Compliant. Copyright © Cisco Systems, Inc. All trademarks are property of their respective owners. For support, visit www.cisco.com/go/support or contact your system administrator.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power/blank screen	Power source	Check PoE switch or power adapter connection; ensure cable is functional.
No dial tone	Network/registration	Check Ethernet cable; verify phone is registered with CUCM; restart phone.
Cannot hear caller	Volume/mute	Adjust handset or speaker volume; ensure Mute button is not lit.
Caller cannot hear you	Microphone/mute	Ensure mute is off; test with handset and speakerphone; check for obstruction.
Poor audio quality	Network/configuration	Check network for packet loss; verify correct audio codec in CUCM.
Phone not registering	IP configuration	Check DHCP server; verify VLAN configuration; confirm CUCM server IP.

Reset: Unplug power, wait 10 seconds, replug. For factory reset, consult administrator.

Service: Contact Cisco Technical Support or your certified reseller.