Chapter F Ring Communications Inc. Digital Network Bridge DNB100 RING COMMUNICATIONS INC.
RING COMMUNICATIONS INC.
September 2004 DIGITAL NETWORK BRIDGE DNB100 CHAPTER F TABLE OF CONTENTS DNB100 DIGITAL NETWORK BRIDGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F5 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F5 OPERATIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F5 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RING COMMUNICATIONS INC.
September 2004 DIGITAL NETWORK BRIDGE DNB100 DNB100 DIGITAL NETWORK BRIDGE INTRODUCTION The Digital Network Bridge (DNB100) interfaces two Ring-Master Crisis Alert Networks to each other. One DNB100 is required in each network. OPERATIONAL DESCRIPTION The DNB100 is installed on a network using a RJ45, eight conductor, modular connector to connect to the RS485 data pair and the +24 Volt DC power. The two DNB100's are "bridged" using a RS232 or RS422 connection between them.
September 2004 DIGITAL NETWORK BRIDGE DNB100 INSTALLATION Each DNB100 in a system can be individually powered from a fuse in the CB901/RM5000 or a local power supply operating off 24V regulated DC. Figure F1 - Rear Panel Connectors J1 - 8 pin (RJ45) Network connections : Two modular jacks are provided at the rear of the DNB100. See Figure F1.
September 2004 DIGITAL NETWORK BRIDGE DNB100 J2 - 9 pin (DB9) RS232 signals : A null-modem (LapLink) cable can be used to connect two DNB100's together if the DNB100's are close enough to each other. Two modems for leased line operation can be used to increase the distance between two bridges. If you are going to make your own cable the following is a description of the pinouts of the DB9 connector on the DNB100. The RS232 cable should not exceed 50 feet in length.
September 2004 DIGITAL NETWORK BRIDGE DNB100 J3 - 6 pin (RJ11) RS422 signals : A two twisted pair installation utilizing RS422 signals can be used to connect two bridges up to 7000 feet apart. Use a six wire RJ11 cord (BF961) with straight through wiring from J3 to a RJ11 jack (KB161). Use two twisted pairs between the two RJ11 jacks as shown in Figure F2. A strap MUST be installed between RTS and CTS of J2 (DB9), in order to disable flow control for the RS422.
September 2004 DIGITAL NETWORK BRIDGE DNB100 Setting Baud Rate DIP switch SW3-1 through SW3-6 is used to set the desired baud rate for the RS232 data. See F i g u r e F 3 . SW3-7 and SW3-8 are not used and should be left in the off, 0, position for normal operation. The network operates at 9600 baud and the RS232 data channel should also be set at 9600. Slower baud rates can be used when using modems, but may decrease network efficiency and speed.
September 2004 DIGITAL NETWORK BRIDGE DNB100 FRONT PANEL SWITCHES AND INDICATORS - Figure F3 SWITCHES SW1 SW2 SW3 - Reset. Creates a local reset for this node only. Node & Network Address RS232 Baud Rate, Device selection L.E.D.'s (left side, network) RUN - Indicates the local processor in the DNB100 is running. Will illuminate after power up or reset. MASTER - Will light steady if this node is the master on the network. There can only be one master on each network.
September 2004 DIGITAL NETWORK BRIDGE RING COMMUNICATIONS INC.
