Pub. 42004-547A
NEMA 4X VoIP Telephones
Page 4 of 17
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System Requirements and Limitations
These VoIP telephones require PoE (Power-over-Ethernet) or a local 24 to 48-volt dc power source for
operation. Two VoIP telephones can communicate in a peer-to-peer configuration without the need for a
LAN. A 10/100 BaseT Ethernet network with a SIP (Session Initiation Protocol) server is required for
systems containing three or more VoIP telephones. Conferences are limited by the customer’s LAN
media capabilities and the services available at each telephone.
VoIP Subscriber Tips
New and existing subscriptions to an interconnected VoIP service provider should address the following
points:
•
Provide accurate physical address information to the VoIP service provider to ensure that emergency
services can quickly be dispatched to the location.
•
Be familiar with the VoIP service provider’s procedures for updating the address and promptly update
address information in the event of a change.
•
Have a clear understanding of any limitations of the local 911 service.
•
Be aware that VoIP telephone services may not work if the power is out or the Internet connection is
down. Consider installing a backup power supply, maintaining a traditional telephone line, or having
a wireless telephone as a backup.
•
For questions about interconnected VoIP and 911, or VoIP in general, see
http://www.fcc.gov/cgb/consumerfacts/voip.html
Operation
Handset Receiver Volume Control
A push-button switch is provided on the front panel for adjustment of the handset receiver volume. It
decreases the volume gain from 20 dB, to 12 dB, to 0 dB, and back up to 20 dB of the original signal with
each press. The signal level is reset to 20 dB after the end of each call.
Model 354-710 Handset Operation
1.
Lift the handset to place a call.
2.
Press the volume control push button to adjust the receiver volume to the desired level.
3.
Dial the desired number.
4.
Place the handset on hook after completing of the call.
Model 354-711 Auto-dial Handset Operation
1.
Lift the handset to place a call.
2.
Press the volume control push button to adjust the handset receiver volume to the desired level.
3.
A call will be placed to a preprogrammed number (garage, dorm, etc.)
4.
Place the handset on hook after completing of the call.
