PREMISES PAGER SYSTEM SmartAlert 200 Series RS-232 Transmitter (8214) RS-232 and Telephone Interconnect Transmitter (8205) Programming and Installation Guide Part Number 320124 Rev E April 2004
Introduction JTECH Communications Inc. is a privately owned United States Corporation which designs and manufactures cost effective in-house communications systems for customers throughout the world. Thank you for choosing JTECH Communications Inc. as the provider for your onpremises paging requirements. We truly appreciate your confidence in our products. At JTECH there is no greater commitment than providing you with total customer satisfaction.
TABLE OF CONTENTS INTRODUCTION ........................................................................................................ ii SYSTEM OVERVIEW AND COMPONENTS.............................................................. 1 PAGER TYPES .......................................................................................................... 2 PROGRAMMING TERMINOLOGY FOR THE SMARTALERT RS232 ...................... 3 RS232 INTERFACE HARDWARE HANDSHAKING-REQUEST TO SEND / CLEAR TO SEND ....
System Overview and Components System Overview Congratulations on your purchase of the SmartAlert 200 Series RS232 Paging Transmitter or the SmartAlert 200 Series RS232 with Telephone Interconnect. These transmitters were designed to interface with a host device to page Industry Standard POCSAG UHF Pagers. The host device may be a personal computer or other electronic device utilizing RS232 communications. This audience for this guide is twofold.
Pager Types The SmartAlert 200 Series RS232 can be programmed to work with several types of JTECH Communications pagers. Most commonly, these include Numeric and Alphanumeric (Alpha) pagers, although pager types may also include Vibe Only, Vibe/Tone, Glowster and CommPass Vibe/Flash and Vibe/Flash/Voice pagers.
Programming Terminology for the SmartAlert RS232 Language Over the years a number radio frequency data patterns (Languages) have evolved to “speak” to pagers. POCSAG is the most widely used language today and a language that JTECH products support. POCSAG is simply an algorithm that is used to encode alphanumeric and numeric data for transmission via modulated radio waves. Message Protocol Two types of data may be sent to today’s pagers, either numeric only or alphanumeric.
Receive Frequency The receive frequency is the center frequency measured in millions of cycles per second that a pager is tuned to. A single frequency may typically supports hundreds of thousands of pagers and it is the Cap Code that allows specific identification of an individual pager. For a pager to operate, the frequency of the transmitter (SmartAlert RS232) must match the receive frequency of the pager. Radio Frequency (RF) Baud Rate vs.
Cap Codes POCSAG pagers must receive a special seven-digit “address” to let it know that the message that follows is for this particular pager. Since thousands of pagers will share a common frequency, a method must exist that allows a single pager among these thousands to respond and all others to remain silent.
Programming your Application to Communicate with the SmartAlert RS232 In order to communicate with the SmartAlert via an RS-232 interface, an RS-232 baud rate, message protocol, and message format must be defined and adhered to by any software application wishing to successfully send pages. Physical Interfaces Data Connection Five lines are connected on the Female DB9 on the transmitter.
Communication Protocol The SmartAlert Transmitter requires, in addition to the correct physical interconnection, that the proper RS232 protocol be followed. That protocol is: • • • • 1200 baud 8 data bits No parity 1 stop bit In addition, the proper message format must be followed. The message format descriptions follow.
Message Format The recommended format is the 7-digit extended format. The 7-digit extended format consists of six parts: 1. 2. 3. 4. 5. 6. Preamble Function Bit (not used in the 3-digit message format) Cap Code Separator Pager Message Terminator A code sample is shown below. Please refer to this example as you read through the sections that describe each part of the message.
Details of the Message Parts 1. Preamble Preamble is a string of three hex characters used to provide “padding” between messages in an output buffer as well as information to the SmartAlert transmitter that a paging message is on its way. The Preamble is Chr$(255) & Chr$(255) & Chr$(255) 2. Function Bit The function bit is actually a byte and is a single hex character, which follows immediately after the preamble.
4. Separator A separator is used to separate the Cap Code from the actual message to be displayed. The separator in the 7-digit extended format provides three additional pieces of information to the SmartAlert transmitter. That information is what type of pager that is to be spoken to (alpha or numeric only), what baud rate is to be used (512, 1200, or 2400), and inverted or non-inverted data. The default Radio Frequency Baud Rate is 512 RF baud.
Hardware Installation The SmartAlert Transmitter is wired directly to a communications port on your host device. This may be a Personal Computer or other electronic device and to any analog phone jack on your telephone system. The first consideration in installation is regarding the placement of the SmartAlert Transmitter. It should be as high as possible and must be located within the length of the communications cable. RS232 cable length maximum is 50 feet. The next consideration involves safety.
Follow the directions below for the SmartAlert 1. Attach the antenna to the BNC antenna port marked A1. 2. Attach the male end of DB-9 straight through cable to the female DB-9 connector located on the front of the SmartAlert transmitter. The PC requires only a straight through DB-9 male to DB-9 Female cable. The SmartAlert is configured as a DCE device and does not require a Null Modem cable. 3. Attach the female end of the DB-9 straight through cable to the male DB-9 serial port connector on the Host PC.
Group Paging Using the Telephone Interconnect Group paging works with numeric pagers only. 1. Pick up the receiver, listen for the dial tone and dial any of the system extensions that have been assigned to the Paging System. You will hear a single beep indicating the system is ready for you to enter the group number. 2. Within 4 seconds press the * key and the number of the group (1-9) you wish to page using the telephone keypad. 3. Press the * key. 4. Enter a message up to 12 digits.
Service If you need service, dial toll-free 800.321.6221 or 561.997.0772 and select option 6 for JTECH Customer Care. If your problem cannot be solved over the phone by one of our service technicians, we will issue you a return materials authorization (RMA) number for you to send the product in for service. Once your product has been received by JTECH, it will be repaired and returned to you with in the current posted lead-time. This is the standard Repair/Return program and covers all pager products.
Appendix A - Telephone Interconnect Specifications Telephone Interfacing Phone Line Interface – The SmartAlert transmitter with telephone will accept input from end-to-end (line level) telephone circuits. Selector or trunk level input is not possible. The phones and phone system must be capable of DTMF and provide a Bell standard ringing voltage. PABX Interface – The PABX (Private Automated Branch Exchange) must pass DTMF tones, and Ringing Voltage, for the SmartAlert transmitter with telephone to work.
• The telephone system then detects current flowing from its source of battery, through the SmartAlert transmitter with telephone's loop closure, and back to the telephone system. The current flow energizes relays in the telephone system, which connect bi-directional audio lines through Tip and Ring to the SmartAlert transmitter with telephone. • Once connected, the SmartAlert transmitter with telephone prompts the caller to enter a pager number.
General Terms and Conditions This offer is subject to the terms and conditions listed below which are binding upon the seller and the buyer under this offer and are hereby incorporated by reference in any subsequent agreement for purchase duly executed between JTECH Communications Inc. Inc. (Seller) and its buyer of goods proposed for sale herein: 1. Price. All prices are F.O.B. point of origin, unless otherwise agreed to in writing by the buyer and seller.
9. Disclaimer of Consequential Damages. In no event shall JTECH be liable for incidental or consequential damages arising out of or in connection with the purchase by Buyer of goods from JTECH including, without limitation, such damages which may be caused by a breach of any obligation or warranty imposed on JTECH under such purchase.
17. Credit Terms. All orders and shipments shall at all times be subject to the approval of JTECH's credit department. JTECH reserves the right of declining to make any shipment called for by the contract between seller and buyer whenever, for any reason, there is doubt in JTECH's sole judgment, as to buyer's willingness or ability to pay for the goods ordered on Buyer's solvency and JTECH shall not, in such event, be liable for breach or nonperformance of this Agreement in whole or in part. 18. Packaging.
® © 2004 JTECH Communications Inc. Printed in USA JTECH Communications Inc. 6413 Congress Ave., Suite 150 Boca Raton, Florida 33487 USA Toll Free: (800) 321-6221 Telephone: (561) 997-0772 Fax: (561) 997-0773 www.jtech.com Part Number: 320124 Rev E Got Questions? Need Help? Call JTECH Customer Care at 800-321-6221, Option 6.