Voice Connections; Voice Service Overview; How The Voice Service Works - KVH Industries TracPhone V11 HTS User Manual

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Installation manual (63 pages)

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Table of Contents

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.

Important!

The TracPhone V11-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

V11-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.

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

Ship Phone

mini-VSAT Broadband

Service

Hub

Converted

to Analog

Internet

D A

SIP Server Proxy

TracPhone V11-HTS User's Guide