
Pub. 42004-463C
VoIP Speaker Amplifier Interface
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Features and Functions
GAI-Tronics’
Model 10370-701 VoIP speaker amplifier
interface has the following features
:
•
10/100 BaseT Ethernet network connection
•
one-way broadcasting from an IP network
•
weatherproof enclosure
•
30-watt speaker amplifier (into an 8-ohm speaker load)
•
600-ohm audio output
•
two dry contact relay outputs
•
SIP compatible (RFC3261)
•
real-time alarm reporting via SNMP, Syslog, or TMA
software
•
configurable via web page or download
•
multicast capability, up to eight addresses
System Requirements and Limitations
Systems containing VoIP speaker amplifier interface
assemblies require A 100 BaseT Ethernet network with a SIP
(Session Initiation Protocol) server. The operation of this equipment is limited by the customer’s LAN
media capabilities and the services available at the end point. The performance of each VoIP speaker
amplifier interface is dependent on the provision of sufficient bandwidth and network protocol
prioritization to give the quality of service required. The setup, installation, and software version of key
components, such as switches and routers, can significantly affect this equipment’s operation. Improper
connections or loose cables can also affect their operation.
The VoIP speaker amplifier interface requires a local 120/240 V ac power source for amplifier output
operation over 8 watts. PoE (Power over Ethernet) is an option for installations requiring less than 8-
watts of speaker audio output.
The following network services provide required and optional functionality (This may vary widely
depending on how the network is deployed):
•
SIP proxy server (to route calls)
•
SIP registrar server (frequently combined with proxy servers)
•
TFTP server (for downloading configuration files).
•
TCP Syslog server (for reporting alarms and external inputs)
•
SNMP server (for reporting via simple network management protocol)
•
SNTP server (to synchronize the internal clock)
•
STUN server (for NAT firewall traversal)
•
PoE (Power over Ethernet) (for less than 8-watts audio output)
Dedicated systems, such as Gatekeepers, VoIP-enabled PABXs or soft PABXs may also provide these
functions. GAI-Tronics’ VoIP speaker amplifier interface supports SIP to RFC3261 call control
signaling.
Figure 1. Model 10370-701
Outline Diagram