Chapter 2: Overview
The Avaya H239 and H249 phones are SIP-based phones, intended to be used in hotels. The
phones support a variety of telephony operations and also include six customizable keys that can be
configured by an administrator. These customizable keys are typically used to access common hotel
services, such as reception, cleaning, and so on. The phones also include a USB port that you can
use to charge a mobile phone.
The main difference between these phones is that the H249 phone has a 3.5–inch color screen, but
the H239 does not have a screen. The H239 phone includes a customizable faceplate with
information, such as dialing rules.
Safety guidelines
Ensure that you are familiar with the following safety guidelines:
• Be aware of the hazards involved with electrical circuitry and be familiar with standard
practices for preventing accidents.
• Use the external power supply that is included in the package. Using another power supply
might cause damage to the phone or affect its reliability.
• Before using the external power supply, check the power voltage to ensure it is compatible.
• Ensure that the power cord or plug is not damaged.
• Do not drop, knock, or shake the phone. Rough handling can break internal circuit boards.
• The phone is designed for indoor use only and it should not be exposed to direct sunlight.
• Do not put the phone on carpets or cushions.
• Avoid exposing the phone to high temperatures, low temperatures below 0°C (32°F), or high
humidity.
• Avoid wetting the device with any liquid.
• Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the device.
Wipe it with a soft cloth that is slightly dampened with water and a mild soap solution.
• Do not attempt to open the device. Non-expert handling of the device can cause a fire,
electric shock, or breakdown.
• During a thunderstorm, do not touch the power plug. Lightning can cause electric shocks.
October 2019
Installing and Administering the Avaya H239 and H249 Phones
9
