
IP TALKBACK WALL SPEAKER/CLOCK ASSEMBLY 
The VIP-431-DS IP Talkback Wall Speaker with 
Digital Clock enables two-way handsfree voice 
access to a single location over an IP-based 
network.  This allows a page zone extension 
anywhere on the network.  The speaker audio level 
is electronically adjusted via software.  Clock 
synchronization is acquired from a Network Time 
Protocol (NTP) server, either a private internal 
server or from the Internet.  A call switch input is 
provided for call initiation.  The enclosure is made 
of steel with a durable gray powder coated finish 
and features an angled design to direct sound 
downward.  The color of the enclosure can easily 
be changed to match any decor.  A detachable 
black cloth grille is included.  Power is provided to 
the VIP-431-DS via a Power over Ethernet (PoE) 
switch meeting the 802.3af specification. 
•  PBX, FXO Port using a VIP-811 
•  POTS telephone set using a VIP-811 
•  PBX, FXS Port using a VIP-821 
•  Valcom M Cast Page Group 
•  SIP–enabled telephone system 
•  RJ-45 network connection 
•  High Efficiency Class-D Amplifier 
•  Network Time Protocol (NTP) synchronization 
This equipment has been tested and found to 
comply with the limits for a Class A digital device, 
pursuant to Part 15 of the FCC Rules.  These limits 
are designed to provide reasonable protection 
against harmful interference when the equipment is 
operated in a commercial environment.  This 
equipment generates, uses and can radiate radio 
frequency energy and if not installed and used in 
accordance with the instruction manual, may cause  
harmful interference to radio communications.  
Operation of this equipment in a residential area  
may cause harmful interference in which case the 
user will be required to correct the interference at 
4.0” D (top) 1.45” D (bottom) 
10.2cm D (top) 3.7cm (bottom) 
•  Weight: 4.25 LBS (1.91 kg) 
Humidity:                 0 to 85% non-precipitating 
Precautionary Designations 
CAUTION:  To reduce the risk of electric shock, 
No user serviceable parts inside. 
Refer serv icing to qualified service  personne l. 
This symbol indicates that dangerous 
voltage constituting a risk of electric 
shock is present with in this unit. 
This symbol indicates that there are 
importa nt operating and maintenance  
instructions in the literature acc ompanying