Pub. 42004-500C
Division 2 VoIP Page Phones
—Wired and WiFi
Page 8 of 24
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Amplifier Paging (Multicast Broadcast)
When making a multicast call, the SIP server or IP device will send paging requests to a specific IP
address and multiple telephones accept and play the subsequent audio. GAI-Tronics’ VoIP telephones
can be programmed for up to eight multicast addresses to permit the receipt of multicast broadcasts from
different sources or to enable zoning of broadcasts. Each multicast address can be assigned a priority (via
programming) to define the override order. A telephone with multicast enabled can still make and receive
normal calls. Normal calls are also assigned a priority level to define whether calls override multicasts or
vice versa.
Installation
Important Safety Information
When installing any GAI-Tronics telephone equipment, please adhere to the following guidelines to
ensure the safety of all personnel:
•
NEVER install a telephone or network wiring during a lightning storm.
•
NEVER install network jacks in wet locations unless the jack is specifically designed for wet
locations.
•
NEVER touch uninsulated network wires or terminals unless the network line has been disconnected
at the network interface.
•
USE CAUTION when installing or modifying network lines.
•
Use silicone sealant or equivalent around and inside all conduit entries
•
Install a Cat5 data line lightning surge protector
on any phone installed where the phone or phone
cable is at risk of being exposed to lightning strikes. The lightning arrestor must be installed as close
to the phone as possible in a non-hazardous environment. The lightning arrestor must not be installed
within the telephone enclosure.
•
USE CAUTION when installing or modifying Category 5 data lines.
GAI-Tronics recommends the following precautionary measures to protect the unit during installation:
•
Install this unit using appropriate Division 2 wiring methods.
•
Run the subscriber line inside conduit to ensure that the unit is vandal resistant.
•
Use conduit entries located on the bottom of the enclosure to prevent any condensation forming inside
the conduit from dripping into the unit. Additionally, using bottom conduit entries makes water less
likely to enter the unit at the conduit connection points.
•
Use Teflon™ pipe joint tape or a thread sealing compound around the conduit threads to seal
threaded connections and prevent water from entering into the unit at the conduit location.
•
Apply a small amount of silicone sealant inside and around the end of the conduit pipe that is inside
the unit. The sealant helps to prevent any condensation formed inside the conduit from dripping into
the unit. This is especially important when using the conduit entry located on the top of the
enclosure. (Manufacturers of silicon sealant include Dow Corning, Duron, General Electric, and
DuPont.)
•
Sealed fittings should be installed at all cable entry points to prevent liquids from entering the unit.
