. .. . . . . . . . . . . . 4 SAFE DRIVING RECOMMENDATIONS FOR USERS OF MOBILE RADIOS* . ... . ... . ... . ... . . 5 OPERATING PROCEDURES ... . ... . ... . . 5 INTRODUCTION . . ... . ... . ... . ... . . 6 CONTROLS, INDICATORS, AND DISPLAYS . . . . 7 CONTROLS .. . ... . ... . ... . ... . . 7 CONTROLS AND INDICATORS . . . . . . . . 8 DISPLAYINDICATORS ... . ... . ... . . 10 DISPLAY ALPHA INDICATORS . . . . . . . . . 11 OPERATING THERADIO .. . ... . ... . . 12 TURNING THE RADIO ON . . ... . ... . .

17 Page Volume Adjust .............................. 17 IMPORTANT SAFETY EDACS OPERATION........................... 17 INFORMATION ........................................ 4 System Selection- SAFETY INFORMATION ......................... 5 Ramping Names ......................... 17 System Selection- OPERATING PROCEDURES.................. 6 Direct Number Entry ............................................ 18 INTRODUCTION...................................... 8 Group Selection- Ramping Names .......

Elegant and sophisticated, the Dialog 4000 IP is the intelligent solution for simplified, cost-effective migration to the world of IP telephony. Remote upgrading of configurations or software from a central location simplifies operation and maintenance. Regardless of location, the IP telephones are kept constantly up to date with the most current software and ready to receive new technical enhancements. Dialog 4000 IP telephones comply with all existing standard requirements, as well as the late

-12 Channel Scan In the scan mode, the radio alternately monitors each Channel until it receives a call. You can scan all Channels, or you can temporarily lock out individual Channels from scanning as desired. 1. Press Sto begin scanning. The SCAN indicator begins to flash. 08 SCAN 2. The radio stops on any Channel that receives a call, and you hear the caller. When the transmission stops, the radio resumes scanning after a brief delay. 3. To disable scanning, press S. Dual Watch If your radio h

. . . . . . .9 Attaching/Removing the Battery . . . . . . . . . . . . 9 Installing the Antenna .. .. .. .. .. .. .. .. . 10 Attaching the BeltClip .. .. .. .. .. .. .. .. 10 Operation .. .. .. .. .. .. .. .. .. .. .. . 11 LCD Display . . . . . . . . . . . . . . . . . . . . . . 11 Transmit/ReceiveIndicator . . . . . . . . . . . . . . 11 Applying Power and Setting the Volume . . . . . . . 12 Receive . . . . . . . . . . . . . . . . . . . . . . . . 12 Channel Scan . . . . . . . . . . . . . . . . . .

Elegant and sophisticated, the Dialog 4000 IP telephones is the intelligent solution to simplified, cost-effective migration to the world of IP. Ericsson calls it IPerformance. IPerformance means excellent voice quality and telephony services. IPerformance means upgradeable. Remote upgrading of configuration or software simplifies operation and maintenance. The IP telephones are ready to take on coming technical enhancements. IPerformance means up-to-date. The Dialog 4000 IP telephones features

2. Press the CLR button to monitor the channel. Noise will be heard if there is no activity on the channel. This function is also useful for setting the desired volume level. 3. You will hear the voice message automatically if a valid message is received by your radio. SENDING A MESSAGE 1. Make sure the radio is turned ON, and the proper Channel and System have been selected. 2. Press and hold the CLR switch and then adjust the VOLUME controls for the desired listening level. Release CLR switch.

Printed in U. S. A. Maintenance Manual LBI-38557 LBI-38557 TABLE OF CONTENTS Page INTRODUCTION... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . . 1 DISASSEMBLY PROCEDURE . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . . 1 TOOLS NEEDED. ... . ... .

. . . . . . . . . . . . . . . LBI- 38849 SYSTEM BOARD . . . . . . . . . . . . . LBI- 38842 AUDIO/LOGIC BOARD . . . . . . . . . . LBI- 38843 AUDIO AMPLIFIER BOARD . . . . . . . LBI- 38844 FRONT CAP ASSEMBLY . . . . . . . . . LBI- 38850 LBI- 38974 PA BOARD . . . . . . . . . . . . . . . . . LBI- 38302 SERVICE SECTION . . . . . . . . . . . . LBI- 38851 DUAL FORMAT MDXO RADIO ASSEMBLY ISSUE 1 SYMBOL PART NUMBER DESCRIPTION APPLICATION ASSEMBLY 19D904183 — — — — ASSEMBLIES — — — A1 19D902123G22 RF BOA

. . . . . . . . . . . LBI- 30032 (DF1107) OSCILLATOR/MULTIPLIER BOARD . . . . . . . . . . . . . . . . . . . . LBI- 30029 (DF1106) IF AUDIO AND SQUELCH BOARD . . . . . . . . . . . . . . . . . . . . LBI- 38507 Ericsson Inc. Private Radio Systems Mountain View Road Lynchburg, Virginia 24502 ericsson . 1- 800- 528- 7711 (Outside USA, 804-528-7711) Printed in U. S.A. LBI- 38505 LBI- 38505 TABLE OF CONTENTS Page SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .