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Long Range Cordless Phones - Mobile Satellite VoIP
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Durafon SIP Phone - Long Range (2 Miles) Cordless Phone
Standard Phone Service over Satellite - Ideal for Fixed or Mobile Satellite Systems - Up to 9 phones per base station
VoIP Phone Service from Ground Control is $49.95 per month, per line, and includes 1000 free phone minutes (16.6 hours) each month.
Durafon SIP Phone
Durafon SIP Phone System
Up to 2 Mile Range
Includes DuraFon SIP base station with one handset phone. Additional handsets (up to 9) may be ordered. All systems are commissioned with our VoIP phone service for plug-and-play ease of use. The Durafon SIP base station can be configured to support up to 4 individual phone lines to the PSTN (Public Switched Telephone Network) using our VoIP service, phone service optimized for satellite.
SKU: DURAFONSIP - Durafon SIP Phone Brochure
Price: Call
Includes 1 handset phone and commissioning.

For 1, 2, 3, or 4 phone lines
using our VoIP phone service over our satellite Internet connection
Additional SIP handset phones include charge cradle. Handset phones are all all commissioned to the VoIP service as long as they are purchased at the same time as the base station.
Price $399

Price: $399 USD

Up to 9 phones may be connected to the base station at any time.

These rugged handset phones connect to the public telephone network over our satellite network, and connect up to 2 miles from the base station. Make or receive phone calls from anyone with crystal clarity or communicate with other handsets much like a Walkie-Talkie. This turnkey solution includes one handset phone that is issued it's own unique phone number. Other handsets may be added with their own phone number, or share a phone number with other phones. All phones may be talking simultaneously over one satellite connection without issue.

Works With All Satellite Systems We Offer
The Durafon SIP phone solutions is easily added to any of our mobile satellite systems as well as our fixed satellite systems. These long-range cordless phones are preactivated, and pre-reconfigured with our VoIP Phone Service. The are fully operational when shipped, and there is nothing needed to configure other than turning the phones on.

Toughsat Systems - Phone Selection
Toughsat XP Flyaway (left)
Toughsat XP Permanent Mount
Fixed Satellite System
With Non-Pen Mount
Toughsat T-100 Trailer
With High-Gain 5-Mile Antenna

Requires No Training - Use Like Any Phone - Local Phone Numbers
Press the "Talk" button on the Durafon SIP handset phone to hear a standard dial tone. Placing a call is as easy as entering the phone number. With the VoIP service from Ground Control, each phone can be issued a local phone number from most any location on the globe. Make and receive calls from anyone. All phones are registered and pre-tested over our satellite network before they ship. When the satellite dish is online, the phones are ready to use.

Phone Service Provided by Ground Control - $49.95 per month per line
Our VoIP phone service is optimized for our satellite network. Make and receive calls just as you would with any phone on any desk. The cost is $49.95 USD per month per phone line and includes 1000 free minutes (16.6 hours) each month, and then $0.04 cents per minute to any in-country phone number. The Durafon solution may have 1, 2, 3 or 4 phone lines. A phone number may be dedicated to 1 handset (up to 4 handsets having their own number).... OR, phones may be "party" configured to share 1 to 4 phone lines, where these numbers will ring all phones at once. A calling handset phone will pick up the first available unused phone line. You may have both "dedicated line" and "party" configurations on a single base station. Here is more information on VoIP Phone Service Over Satellite offered by Ground Control.

Durafon SIP Base Station
Connect Up To 2 Miles From Base
These phones are the highest powered cordless phones available in North America, extending range up to 2 miles from the base station. The connection penetrates 12 walls or 12 floors (stories), so the base station can be outside while you work inside. Each phone includes an additional 9" whip antenna that helps extend existing range. Antennas are easily swapped with a quick-twist.

Phone Options  
Press Talk to get dial tone and enter the number you wish to dial. Answer calls by pressing the same "Talk" button. These handsets may also transfer a received call to any other registered handset.
The Broadcast Button when pressed for 2 seconds allows you to speak to all in-range handsets over the speaker phone, much like a Walkie-Talkie or public address system.
Press the 2-Way button, and enter the 2 digit number of any handset phone to establish handset-to-handset calling, even if the base station is turned off.

Long-Range phones are quick and reliable team communication solution in rural or urban locations, & connecting everyone to the public telephone network.

Highly Secure
The DuraFon SIP handset phones utilize Digital Spread Spectrum (DSS) with Frequency Hopping of 100 channels per second over 128 channels to maintain clarity and privacy. In addition, the base unit provides individual handset with one of over 65,000 random security codes to ensure that another system's handset is unable to link to another (non-related) base unit.

Long-Range Distances
The Durafons are the longest range cordless phones available for North America. While range may be slightly affected by environmental conditions, below are some advertised guidelines:
1) 12 floors of building penetration.
2) 250,000 sq. ft. in a warehouse or retail store.
3) 3,000 acres on a farm or ranch.

Long-Range Phone Features:
bullet No user training. Operates like any phone. Optimized for use over our satellite network.
bullet All weather handsets operate up to 2 miles or 12 stories from the base station.
bullet Crystal clear, low-latency communication using Ground Control's VoIP Phone Service.
bullet Base Station supports up to 4 separate phone lines with "local" numbers.
bullet While system includes 1 handset, up to 9 handsets may be supported on a SIP base station.
bullet Incoming calls may ring one phone, or a group of phones (admin defined).
bullet Handsets may transfer a call to another handset, or conference in another handset.
bullet Handsets may communicate with each other independent of the base station.
bullet Handsets operate for 50 hours on standby, 6 hours total talking time (4 hour recharge).
bullet Text Messaging, including texting local handsets.
bullet Caller ID, Call Waiting, Call Holding, Call logs, Speed Dial, Call Transfer, Phone book.
bullet Adjustable Ringer, Vibration, Silent mode.
bullet Handset/Cradle pull-out shelf's use 1.5 RU of space.
bullet Additional 9" whip antennas extend range of handset phones.
bullet Belt Clips for handsets with quick-release button.
bullet Many other configurable options if needed. Please read the users manual.

TurnKey - Commissioned - Configured - Tested and Working
Ground Control tests each system to confirm proper operation before it leaves our doors. There is no user operation other than turning the handset phone on. The base station automatically activates when satellite dish is online. There is no training needed for using the phone service.

Industry Uses - Primary and Secondary Communication
Construction work site that needs phone connectivity
Utility Work site. Stay connected during power outages.
First Responders Expanding Interoperability Communication To Any Location
Emergency Staging Areas - Keep all personnel connected.
Media Events - Connect all team members to each other and outside world
Exploratory Expeditions
Minding - Oil & Gas

User Programmable PBX
While we configure the phones to your specifications, you may reconfigure them at any time for a new situation. Phones may have their own phone number, and/or a group of phones may share one or more phone numbers. Please read the User Manual for a complete feature list of PBX integrated functions, or contact for configuration information.

Durafon SIP Phone - Construction
Durafon SIP Phone - Office
Dialing a SIP Phone
Fixed satellite VSAT dish
Durafon SIP Phone with Dockworker
Trailer top Toughsat
Toughsat T-100 Trailer
SIP Phone in warehouse
Flyaway Toughsat - Fly And Drive
SIP Phone with farmer

  Durafon SIP Phone Documentation

DuraFon SIP Phone

DuraFon SIP
Users Manual

Durafon SIP Phone

Long-Range Phone Accessories
DuraFon DuraWalkie Li-Ion Battery
DuraFon Li-Ion Battery
(additional or replacement)
These batteries are quite small, but keep the handsets charged for 50 hours on idle, or 6 hours of continuous talking. We always recommend having a 2nd battery for each handset.

$42 Each
DuraFon SIP Handset
Extra DuraFon SIP Handset Phones
DuraFon SIP Handsets are capable of making and receiving calls, or communicating directly with other SIP handsets. The base station may connect with up to 9 handsets, and up to 4 individual phone numbers/lines.

$499 Each
(With Charge Cradle)
High-Gain Antenna
High-Gain Antenna - 5 Mile Range Extender
Add this High-Gain external antenna to increase the handset range up to 5 miles from the Durafon SIP base station (and also using long 9" whip antennas on handsets). Includes 66' foot antenna cable and mounting hardware. Here is a good tripod stand for the external antenna, which available here from

Price $250 USD

Getting Started
For information into establishing a long-range Durafon SIP phone for your satellite system, please speak with one of our sales professionals at +1 805-783-4600, or email us at
VoIP Main Page

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