Installation Guide for 900i

Installation Guide for 900i

Brand: NEC

Category: Cordless Telephone

Document Type: Installation Guide

Language: EN

Uploaded: Nov. 21, 2025, 8:25 p.m.

Manual Publish Date: 2001-04-01

  • Basic Operation: Using the Handset
  • Onyx VSi Features:
    • Outside Calls
    • Hold
    • Intercom Calls
    • Transfer
  • System Features:
    • Account Codes
    • Call Forwarding
    • Callback
    • Caller ID
    • Camp-On
    • Conference
    • Directed Call Pickup
    • Display Messages
    • Flash
    • Group Call Pickup
    • Group Ring
    • Headset
    • Hotline
    • Intrusion (Barge-In)
    • Last Number Redial
    • Line Callback
    • Meet-Me Conference
    • Message Waiting
    • Microphone Mute

Troubleshooting and error codes

Problem Suggestion
Charge light won't come on when the handset is placed in the desktop charger
  • Make sure the AC Adaptor is plugged into the desktop charger and wall outlet.
  • Make sure the handset is properly seated in the desktop charger.
  • Make sure the lead-acid battery is properly placed in the handset.
  • Make sure that the charging contacts on the handset and desktop charger are clean.
Conversation interrupted frequently.
  • Make sure that the base unit's antenna is fully vertical.
  • Move closer to the base unit.
  • Check for BATT LOW warning.
Warning tone and NO SERVICE message.
  • Move closer to the base unit.
Handset doesn't ring.
  • The battery may be weak. Charge the battery for 15-20 hours.
  • Make sure the base unit antenna is fully vertical.
  • The handset may be too far away from the base unit.
Interference from other cordless phone users.
  • Press the CHAN key to switch channels. The channel can be changed while you are on an active call, but not when you are dialing a telephone number.
Interference or noise in the handset.
  • Make sure the base unit is at least 3' away from any computer, fax machine, printer, or TV (they generate radio waves)
  • Make sure the antenna is in the upright position
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