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Vertex Standard
Trunking System     

VX-Trunk III

Vertex Standard Logo


Vertex Standard VX-Trunk III Radiotelephone Trunking System

Vertex VX-Trunk Radiotelephone Trunking System
Trunk up to 16 Conventional Channels (VHF/UHF) at 16 Different Sites, Accommodates up to 1,100 Users. Selective Call or Group Call, Mobile/Mobile, Mobile/Landline, Landline/Mobile Calls (above picture a simulation)

General Information:
VX-Trunk III Radiotelephone Trunking System 
The VX Trunk III trunking system is designed for mobile radio telephone systems to provide mobile-to-mobile and mobile-to-landline calling at a cost lower than cellular or 800 MHz trunking systems.
The VX Trunk III system consists of two proprietary components: the VTS-300 Base Station Controller, a telephone interconnect terminal that fits into a standard 19-inch rack mount enclosure, and a series of mobile and/or portable radios converted via custom logic boards for VX Trunk III use. The VX Trunk III system manages radio traffic by scanning all system channels then identifying and locking on "open" channels. It provides a full range of telephone interconnect capabilities, mobile-to-mobile calling to individuals and groups, and accommodates up to 16 channels with a total system capacity of 1,100 subscribers*. Trunked channel controllers can be located at a single site for easy maintenance, or multiple sites for extended coverage.           
Key features of the system include:
  • Subscriber validation
  • Call privacy
  • Simple PTT access
  • Call limit timers
  • Scratch pad dialer
  • 10-Number memory speed dial
  • Last number re-dial
  • Clear channel alert
  • 5-digit security code
  • Distinct ring tones to
    distinguish call type
  • Emergency/Priority user
  • Auto-Transpond to
    eliminate wasted airtime
  • Remote-kill to disable
    dead beat or stolen radios
  • Radiotelephone, fleet dispatch and conventional modes
  • Built-in local com port and remote modem to access/download call records database

    *Expandable with option.

VX-Trunk III VX-300 Specifications

Vertex Standard VX-Trunk III Radiotelephone Trunking System Mobile to Landline Calls

Vertex Standard VX-Trunk III Radiotelephone Trunking System Landline to Mobile Calls

Mobile to Landline Calls
Calls from radio subscribers to landline telephones are initiated by dialing a single digit routing number, followed by the * button on the DTMF microphone or keypad. This begins a channel search which scans all system channels until an open channel is found. Once an open channel is verified, a dial tone is heard and then the desired telephone number can be dialed.

Landline to Mobile Calls
To call a mobile unit from a landline telephone, simply dial the system telephone number. At the "beep" tone, dial the four digit subscriber number. The VX-Trunk III controller will ring the mobile unit(s) and make connection. Both DTMF and rotary telephones can be used with the VX-Trunk III system

Vertex Standard VX-Trunk III Radiotelephone Trunking System Mobile to Mobile Calls

Vertex Standard VX-Trunk III Radiotelephone Trunking System Group Calling

Mobile to Mobile Calls
These calls are handled in a similar fashion as mobile to landline calls but with a different routing digit. Once an open channel is found, a "beep" tone is heard. Entering the called subscriber number completes the connection. In this mode the base station acts as a repeater.
Group Calling
Group calling is possible from either landline or mobile units. The procedure is similar to landline-to-mobile or mobile-to-mobile calling. The "Group Call" function can be easily programmed into the VX-Trunk III system, adding an extra communications dimension not found in most cellular systems.

Lowest Price

Vertex VX-Trunk III Radiotelephone Trunking System

VTS-300 Trunking Site Controller III
PRG VTS-300 Programming Manual and Software (MS-DOS)

Visa, MasterCard, Discover and American Express Accepted

Accessories and Options

VTM-20** Trunking Mobile Logic Board for 2011/7011/2000 -
VTP-20** Trunking Portable Logic Board for VX-500/510 - Digital
VTP-30 Trunking Portable Logic Board for VX-200
w/FTT-9 - Analog
VTP-40 Trunking Portable Logic Board for VX-10 - Digital
VTP-50 Trunking Portable Logic Board for VX-210/400/
800 - Digital
PRG VTP-50 Programming Software for VTP-50 (MS-DOS)
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Got a question?
Answers to your Options and Accessories questions...need a special antenna or modification...
just ask!      Lowest Price

1 781 294-4992
Help/tech support only. Save time..order online!

VX-Trunk III VX-300 Specifications

VTP-20 Trunking (VX-500/510) Portable Controller Board
VTP-20 Trunking (VX-500/510) Portable
Controller Board

VTM-20 Trunking Mobile Controller Board
VTM-20 Trunking Mobile Controller Board
Converts all FTL-2011/7011
(4 channel or 24 channel) mobiles
to VX-Trunk III operating units

PayPal Acceptance Mark

Visa, MasterCard, Discover and American Express Accepted

Our e-commerce system uses a XRamp
SSL Secure Site protected through

Terms & Conditions
Table of Contents

Copyright 2000-2018  Multec Communications / - All rights reserved. Do not duplicate without the express written consent of Multec Communications.
Shipping & Mail only - Note: returns require a RA# - see RETURNS  before shipping
Address...                      Note: warranty repairs only - see REPAIRS  before shipping

Multec Communications
319 Centre Ave.  #166
Rockland, MA  U.S.A.   02370-2613
781 294-4992 main
781 527-5004 fax (include return email w/fax)

Main 781 294-4992
- calling hours 2-5 EST  Monday-Friday for questions and tech support only...."Out of Area", "Restricted" and "Private Caller" calls may be blocked to avoid phone spam. Note: The main line is often very busy and voice mail is not available. Please place orders online using our secure e-commerce system. Save time...order online!

If you have questions about ordering please see  ordering information page  first. Phone orders slow processing time, increase inaccuracies and are not recommended.

Email questions or comments at - Email

Note: Not responsible for typographical, photographic or pricing errors.
         All pricing and specifications subject to change without notice.