TracPhone V7-HTS User’s Guide
55
Voice Connections
Voice Service Overview
KVH’s enhanced voice service – Voice over IP (VoIP) optimized for
satellite communications – allows you to make and receive phone calls
via the TracPhone system and the mini-VSAT Broadband service.
Voice traffic is given priority on the network over standard Internet
data to ensure the highest quality voice connections at all times.
How the Voice Service Works
When you dial a phone number using the ship’s analog phone, the
TracPhone system converts its analog signal into digital VoIP data and
transmits it over the mini-VSAT Broadband network to an Internet-
based SIP (session initiation protocol) server. The digital VoIP data is
then converted back into its original analog signal and routed via a
proxy server to the appropriate public switched telephone network
(PSTN). Finally, the telephone network’s carrier completes the call to
ring the desired shore phone line.
Figure 6-1 Voice Service Call Routing
Important!
The TracPhone V7-HTS voice service will not provide Automatic
Number Identification or Automatic Location Information capabilities
associated with emergency services, such as 911 or E911. In addition,
the voice service will not work in the event of either a network service
outage or a power failure. Therefore, it is critical that you maintain
your vessel’s separate distress and safety communications system for
emergency calls. Be sure to inform anyone who may use the TracPhone
V7-HTS of the limitations of emergency services. The manufacturer,
distributor, and service provider shall not be liable for, and expressly disclaim,
any direct or indirect damages, claims, losses, expenses, liabilities, actions,
risks, or harms arising out of or related to the services provided through this
equipment, including without limitation, emergency services.
Converted
to Digital
mini-VSAT Broadband
Service
Internet
SIP Server Proxy
Telephone
Network
(PSTN)
Shore Phone
A
D
Hub
Converted
to Analog
DA
Ship Phone
TracPhone
System
To Next Page
Loading...
Need help?
General
