Dialogic M7324 Manuel d'utilisateur

Dialogic® PBX Integration Board User’s Guide Copyright © 1999-2008 Dialogic Corporation 05-1277-010

Dialogic® PBX Integration Board User’s Guide 10

Dialogic® PBX Integration Board User’s Guide Call Route Example Display (Soft Key not Shown) Called/ Calling No. ID Data External direct call with

4. PBX Systems Example An application uses the d42_gtcallid( ) function to retrieve the calling number ID for a call received on a specified channel

Dialogic® PBX Integration Board User’s Guide MWI Off A technique to turn off the MWI in this switch, using dx_dial( ) with the dial string, is to: 1.

4. PBX Systems Completing the Transfer To complete a call (supervised or blind), one of the following methods can be applicable: • Press the Softke

Dialogic® PBX Integration Board User’s Guide 4.5. Nortel Norstar and Nortel BCM The Norstar product family includes the Compact version and the expa

4. PBX Systems 4.5.1. Nortel Norstar Programming Requirements There are specific switch programming requirements that apply if using a Dialogic® PBX

Dialogic® PBX Integration Board User’s Guide Menu Option/Default Value New Value Line type: Public PoolA Prime set:

4. PBX Systems Menu Option/Default Value New Value 4. Direct-Dial (no changes required) 5. Capabilities a) Dialing filters (

Dialogic® PBX Integration Board User’s Guide Menu Option/Default Value New Value e) COS passwords (no changes required) 6. Service

4. PBX Systems Nortel Norstar Programming Requirements for MICS and CICS Nortel MICS switches typically support connections for up to 16 voice mail p

1. How to Use This Manual 1.1. Audience This manual is intended for programmers and engineers who choose to use Dialogic® PBX Integration Boards an

Dialogic® PBX Integration Board User’s Guide Prime Line: I/C Intercom Keys: 1 Answer DNs: None Capabilities: Fwd No Answer: To: Next D/82 extension D

4. PBX Systems Lines (for each trunk going directly to the board) Trunk/Line Data: Trunk Type: Loop (see below for DID programming) Line Type: Pool

Dialogic® PBX Integration Board User’s Guide external call forwarded on ring no answer and an external call forwarded on busy. If the Dialogic® PBX I

4. PBX Systems Step 1: Clear Memory NOTE: If the DID card is already attached and functional, please proceed to the next section. If a memory clear

Dialogic® PBX Integration Board User’s Guide Step 3: Program the Target Line In this example, the target line number is Line 145. The following progr

4. PBX Systems To determine the current setting of a Memory Button, press 0Feature then press the Memory Button you want to check. The display shows

Dialogic® PBX Integration Board User’s Guide Table 24 lists the various panes when moving through the wizard to create the template. The default valu

4. PBX Systems Menu Option/Default Value New Value Line Assignment Line: <Add> as required The Dialogic® PBX Integration Board supports up to

Dialogic® PBX Integration Board User’s Guide Menu Option/Default Value New Value Call Forward Forward no answer to: <as required> Forward on b

4. PBX Systems Menu Option/Default Value New Value Button 05: <Blank> Button 06: <Blank> Button 07: <Blank> <Feature> <

Dialogic® PBX Integration Board User’s Guide 1.3. PBX Models Covered in This Manual This manual currently includes support for the following PBXs and

Dialogic® PBX Integration Board User’s Guide Menu Option/Default Value New Value Button 22: <Feature> <Page General (F60)> Button 23: I

4. PBX Systems RlsFeatureHoldDisplay ButtonsDisplay051103090208010700060410131912181420152116221723IndicatorsLine and Memory Buttons Figure 12. No

Dialogic® PBX Integration Board User’s Guide Table 25. M7324 LCD Indicator States State Value (Hex) off 0x00 on 0x01 ringing 0x02 hold 0x03 error 0x

4. PBX Systems Byte Key Description Dial String 11 Memory Button 11 <ESC>KT 12 Memory Button 12 <ESC>KU 13 Memory Button 13 &

Dialogic® PBX Integration Board User’s Guide NOTE: The application can obtain the least significant byte of the value returned by the d42_indicators(

4. PBX Systems Example An application uses the d42_display( ) function to retrieve the prompt data displayed for Display Key 00, as shown in Figure 1

Dialogic® PBX Integration Board User’s Guide Table 27. M7324 Direct Key Dialing Strings for Display Keys Dial String Key Description <ESC>KP

4. PBX Systems buffer (shown below). The information for the top row (first 16 characters) of the display is checked. Data in bytes 00 through 15 ind

Dialogic® PBX Integration Board User’s Guide The contents of the called/calling number ID (as seen by the receiver of the call) are shown in Table 28

4. PBX Systems Example An application uses the d42_gtcallid( ) function to retrieve the calling number ID for a call received on a specified channel

1. How to Use This Manual 1.4. Documentation Conventions The following documentation conventions are used throughout this manual: • When terms are

Dialogic® PBX Integration Board User’s Guide MWI Off A technique to turn off the MWI in this switch, using dx_dial( ) with the dial string, is to: 1.

4. PBX Systems data 4D 65 73 73 61 67 65 00 66 6F 72 00 79 6F 75 20 byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 data 4D 53 47 20 20 20 2

Dialogic® PBX Integration Board User’s Guide answer. Because of this capability, supervised transfer is a comparatively preferred call transfer metho

4. PBX Systems right Display key (which is Display Key 02) and <ext> is the PBX extension to which you are transferring the call. Completing th

Dialogic® PBX Integration Board User’s Guide <ESC>KR acts as a key press (which is Display Key 02, the far-right display key). Aborting the Tra

4. PBX Systems This check is only made whenever d42_gtcallid( ) and d42_gtcallidex( ) are called. The directory maps the phone name to the associated

Dialogic® PBX Integration Board User’s Guide On the first tier, the administrator can select either a D82/D42 port or the “skip” option: • D82/D42

4. PBX Systems • Delete: Remove an entry from the directory. This command does not require a D82/D42 port to be specified. • Update: Update an exis

Dialogic® PBX Integration Board User’s Guide The parameter list for batch mode is: • /s=<ext1>-<ext2> : this field is required. Specify

4. PBX Systems 4.6. Nortel Meridian 1 The Nortel Meridian 1 is a full-featured PBX that can provide thousands of ports and many PBX voice and data f

Dialogic® PBX Integration Board User’s Guide 1.5. Dialogic® Voice Hardware Covered by This Manual The Dialogic® PBX Integration Board voice hardware

Dialogic® PBX Integration Board User’s Guide Table 30. Nortel Meridian 1 Configuration Requirements Menu Option Value CLS CTD FBD WTA MTD FNA HTA

4. PBX Systems The Dialogic® PBX Integration Board can: • transfer calls • set the message waiting indicator • read the LCD display • read LCD i

Dialogic® PBX Integration Board User’s Guide 4.6.3. Programmable Feature Keys As illustrated in Figure 15, there are 16 Programmable Feature Keys l

4. PBX Systems Table 32. M2616 Direct Key Dialing Strings for Feature Keys Byte Key Description Dial String 0 Feature Key 00 <ESC>KA 01

Dialogic® PBX Integration Board User’s Guide 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 4716 17 18 19 20 21 22 2300 00 00 0

4. PBX Systems The Dialogic® PBX Integration Board can retrieve the information on its alphanumeric display using the d42_display( ) function. The fu

Dialogic® PBX Integration Board User’s Guide If placing a call to another extension, the called number ID (by default, the extension of the telephone

4. PBX Systems Example An application uses the d42_gtcallid( ) function to retrieve the calling number ID for a call received on a specified channel

Dialogic® PBX Integration Board User’s Guide MWI Off A technique to turn off the MWI in this switch, using dx_dial( ) with the dial string, is to: •

4. PBX Systems Completing the Transfer To complete a call (supervised or blind), press the transfer key again with the dx_dial(&), where & ac

1. How to Use This Manual name that is generic. For example, D/xxx refers to all models of the Dialogic® voice hardware, and D/8x refers to all 8-cha

Dialogic® PBX Integration Board User’s Guide 4.7. NEC NEAX 2000/2400 PBXs and Electra Elite KTS The Dialogic® PBX Integration Board has either four

4. PBX Systems set these features exactly (and assigned to the right keys) so that the PBX Integration Board and the Dialogic® Unified API can functi

Dialogic® PBX Integration Board User’s Guide 12345678910111213 14 15 161234567891011 1213 1415 1617 1819 20123ABC DEFRECALL456GHIJKL MNO789PQRSTUV WX

4. PBX Systems 4.7.3. Flexible Line Keys There are 16 Flexible Line keys located on the top of the DTerm Series III telephone as shown in Figure 16.

Dialogic® PBX Integration Board User’s Guide Table 35. DTerm III Series LCD Indicator States (Upper Nibble) Binary Hex Description 0000 0000 0x00

4. PBX Systems Table 36. DTerm Series III Direct Key Dialing Strings for Feature Keys Byte Key Description Dial String 00 Flexible Line Key 1

Dialogic® PBX Integration Board User’s Guide Line Key 100 0F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 xx 00 00 00 xx 00 00 0000 01 02 03 04 05 06 07

4. PBX Systems 4.7.4. Function Keys There are eight Function keys located next to the dial pad keys in two groups: • FNC, CNF, LNR/SPD, SPKR, and A

Dialogic® PBX Integration Board User’s Guide Example An application uses the d42_indicators( ) function to retrieve the current data for the LCD indi

4. PBX Systems Reading MIC and ICM LED Indicators The Dialogic® PBX Integration Board can determine the state of the MIC and ICM indicators by using

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Dialogic® PBX Integration Board User’s Guide • phone status • line selection The data used to display information on the LCD alphanumeric display i

4. PBX Systems to the display. The calling number ID data sent from the PBX to the station set may differ from the calling number ID data presented o

Dialogic® PBX Integration Board User’s Guide 20 32 30 30 5F 32 30 33 xx xx xx xx xx xx xx xx0123456789101112131415DataBytebb200_203Textxx xx xx xx xx

4. PBX Systems Note the following: • The string buffer used to pass the parameter cannot be more than seven characters plus the NULL terminator. •

Dialogic® PBX Integration Board User’s Guide LED indicators data. Byte 17 contains the Message Waiting indicator status (0x00 is off; 0x70 is on). Re

4. PBX Systems answer. Because of this capability, supervised transfer is a comparatively preferred call transfer method. Initiating the Transfer Onc

Dialogic® PBX Integration Board User’s Guide using the d42_setparm( ) function with the D4CH_LC_LAMP parameter. Refer to the Dialogic® PBX Integratio

Appendix A Technical Specifications Dialogic® PBX Integration Board Technical Specifications* Number of ports/card 8 Total ports/system 64 Max. bo

Dialogic® PBX Integration Board User’s Guide Safety & EMI Certifications United States FCC part 68 does not apply Canada CSO3 does not apply Di

Appendix A Signal/noise ratio 10 dB (referenced to lowest amplitude tone) Talk off Detects 0 digits while monitoring Mitel speech tape #CM7291. Dete

2. Introduction to PBXs and KTSs A PBX, or private branch exchange, is a telephone system that is usually installed in a business. It provides servi

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Glossary Analog Signal A continuously variable signal. Voice signals on telephone lines are usually analog (i.e., transmitted electronically in a fo

Dialogic® PBX Integration Board User’s Guide Hybrid System A term used to describe a telephone system that has attributes of both Key Systems and PB

Glossary TDM Time Division Multiplex - A technique used for transmitting separate data, voice, or video messages simultaneously over one phone line b

Dialogic® PBX Integration Board User’s Guide 174

Index A Adaptive Differential Pulse Code Modulation, 28 ASR. See Automatic Speech Recognition automated attendant, 17, 25, 32, 171 Automatic Speech R

Dialogic® PBX Integration Board User’s Guide Nortel Norstar KSU, 124, 125, 126, 129, 131 Siemens Hicom, 72, 73, 75 Siemens ROLM, 59, 60, 62, 63, 64

Index Message Waiting Indicator, 129 T pressing Display Keys, 125 Text-to-Speech, 32 pressing Programmable Memory Keys, 124 transfer calls, 18, 24, 30

Dialogic® PBX Integration Board User’s Guide may be sent outside the PBX if outside networks also use digital circuits; however, they are usually conv

2. Introduction to PBXs and KTSs or separate wires (e.g., RS-232). Because of its versatility, out-of-band signaling is often the selected method. C

COPYRIGHT AND LEGAL NOTICE Copyright © 1999-2008, Dialogic Corporation. All Rights Reserved. You may not reproduce this document in whole or in part

Dialogic® PBX Integration Board User’s Guide A supervised transfer can be implemented without a Dialogic® PBX Integration Board (e.g., using hook flas

2. Introduction to PBXs and KTSs heavy, in which case the application may need to handle a call overflow condition. An application can perform blind

Dialogic® PBX Integration Board User’s Guide 2.4. Called Number ID Called number ID is also a feature provided within a PBX system and is usually com

2. Introduction to PBXs and KTSs 2.5. Positive Disconnect Supervision PBX phone systems detect when an outside caller has “hung up” the phone. This

Dialogic® PBX Integration Board User’s Guide 2.6. In-Band Signaling PBXs may use a method called in-band signaling to control their station sets. In-

2. Introduction to PBXs and KTSs Applications used with a PBX that provides ANI digits may process the display data and use those digits to access re

Dialogic® PBX Integration Board User’s Guide 26

3. PBX Integration Overview The Dialogic® PBX Integration Board combines the voice and fax features available in the Dialogic® D/4x product line wit

Dialogic® PBX Integration Board User’s Guide • detect the presence of tones - DTMF, MF, or an application-defined signal or dual tone • perform call

3. PBX Integration Overview This processor handles real-time events, manages data flow to the host PC to provide fast system response time, enables r

Table of Contents 1. How to Use This Manual ... 11 1.1. Audience ...

Dialogic® PBX Integration Board User’s Guide • Read displays - There are many types of information displayed on a phone; for instance, hook state, me

3. PBX Integration Overview customers unwilling to shift from older PBX integration development models, the Unified API provides for backward compati

Dialogic® PBX Integration Board User’s Guide • places outbound calls and automatically reports the result • retrieves called/calling number ID to

3. PBX Integration Overview PCI9052InterfaceFront EndToPBX100 MHz OnyxDSP with 256K x24 SRAM with2 Wait StatesCT812 TimeSlotInterchangeH.100BusAddr

Dialogic® PBX Integration Board User’s Guide computer to SRAM and DSP memory when the Dialogic® PBX Integration Board is started. Dialogic® Springware

3. PBX Integration Overview additional tools and examples that allow developers who choose to do so to create complex multi-channel voice application

4. PBX Systems 4.1. Avaya Definity PBXs The Avaya Definity product family includes the Definity 75 (4-wire) and the Definity G3 (2-wire) PBXs. The

Dialogic® PBX Integration Board User’s Guide Table 1 lists the structure used if configuring an Avaya Definity PBX. For details about programming an

4. PBX Systems Caller ID Requirement The extension number must be included in the name field of the extension. This requires PBX programming. 4.1.2.

Dialogic® PBX Integration Board User’s Guide 4.1.4. Avaya Function Keys... 45

Dialogic® PBX Integration Board User’s Guide 00 051015272201 061116282302071217292403 081318203230250409141921333126MessageSelectTransferHoldDropConf

4. PBX Systems FeatureButtonsIndicatorsFunction KeysDisplayDisplayButtons0001020304051022152706 112316 2807122417290813251820303209142619213133 Figur

Dialogic® PBX Integration Board User’s Guide value of eight [0x08] indicates ON), while the green light has six possible values. The status of the in

4. PBX Systems Byte Key Description Dial String 4 Feature Button 03 <ESC>KD 5 Feature Button 04 <ESC>KE 6 Feature Button 05 <

Dialogic® PBX Integration Board User’s Guide Byte Key Description Dial String 32 Feature Button 31 <ESC>Kf 33 Feature Button 32 <ESC&

4. PBX Systems Pressing Feature Keys The Dialogic® PBX Integration Board can “press” any of the Avaya 7434 or 8434’s Feature Keys using the dx_dial(

Dialogic® PBX Integration Board User’s Guide 4.1.5. Display Keys As shown in Figure 3, there are five Display Keys located below the LCD display. Th

4. PBX Systems • error messages • called/calling identification • phone status • line selection • Display Key prompts The data used to display i

Dialogic® PBX Integration Board User’s Guide number of the telephone placing the call) to the station set between the first and second rings. The sta

4. PBX Systems Example An application uses the d42_gtcallid( ) function to retrieve the calling number ID for a call received on a specified channel

Table of Contents 4.6.2. Using the Dialogic® PBX Integration Board... 140 4.6.3. Programmable Feature Keys ...

Dialogic® PBX Integration Board User’s Guide MWI Off A technique to turn off the MWI in this switch, using dx_dial( ) with the dial string, is to: 1.

4. PBX Systems Completing the Transfer To complete a call (supervised or blind), press the transfer key again with dx_dial(&), where & acts a

Dialogic® PBX Integration Board User’s Guide 4.2. Siemens ROLM PBX The ROLM product family includes three generations of ROLM and related PBXs: 1.

4. PBX Systems • XFER (transfer) must be programmed on Feature Key 38. • MWI (Message Waiting Indication) mechanisms are different with ROLM CBX 90

Dialogic® PBX Integration Board User’s Guide For ROLM CBX 9005 PBX For the ROLM CBX 9005 PBX, the following programming requirements apply: • In thi

4. PBX Systems 36342419140408284033231813030727393222171202063121161101263735252015050929CALL WAITINGCALL WAITINGDisplayIndicatorsMWICLEARLINEMUTEXFE

Dialogic® PBX Integration Board User’s Guide Table 7. ROLMphone 400 LED Indicator States State Value (Hex) off 0x00 on 0x01 ringing 0x02 hold 0x03 e

4. PBX Systems Table 8. ROLMphone 400 Direct Key Dialing Strings for Feature Keys Byte Key Description Dial String 00 Feature Key 09 - LINE <

Dialogic® PBX Integration Board User’s Guide Byte Key Description Dial String 25 Feature Key 34 <ESC>KZ 26 Feature Key 33 <ESC>Ka

4. PBX Systems Feature Key 0961 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0000 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 1

Dialogic® PBX Integration Board User’s Guide 6

Dialogic® PBX Integration Board User’s Guide • phone status • line selection The data used to display information in the LCD alphanumeric display i

4. PBX Systems to the display. The calling number ID data sent from the PBX to the station set differs from the calling number ID data presented on t

Dialogic® PBX Integration Board User’s Guide text bb 2 2 1 _ 2 2 4 data 20 32 32 31 5F 32 32 34 xx xx xx xx xx xx xx xx xx xx xx xx xx x

4. PBX Systems 2. Call the dx_dial( ) function. The dial string is <ESCF><extension><ESCF> (optional pause character may be used).

Dialogic® PBX Integration Board User’s Guide Aborting the Transfer A transferred call can be aborted at any time (prior to completing the transfer) b

4. PBX Systems 4.3. Siemens Hicom PBX The Siemens Hicom is a full-featured PBX that can provide thousands of ports and many PBX voice and data featu

Dialogic® PBX Integration Board User’s Guide without scrolling the display. This technique is not followed by the Dialogic® PBX Integration Board. Th

4. PBX Systems as the General Call Key, which provides the off-hook indicator. Refer to Figure 6 and Table 12 for specific Key locations and set-up r

Dialogic® PBX Integration Board User’s Guide prompts and messages on the display to provide various options. The PBX Integration Board can: • transf

4. PBX Systems General CallConsultationProgrammableLineLineLineMWL_OFFMailboxCallback-+IndicatorsFeature KeysDisplay030201001110090807060405Programma

List of Tables Table 1. Avaya Definity Configuration Example ... 38 Table 2. Avaya 7434 and 8434 LED In

Dialogic® PBX Integration Board User’s Guide associated with each key. The LED indicators are rectangular and can take on one of the six states liste

4. PBX Systems Byte Key Description Dial String 8 Feature Key 08 - Line <ESC>KI 9 Feature Key 09 - Line <ESC>KJ 10 Feature Key 1

Dialogic® PBX Integration Board User’s Guide for byte 1 is 0x01, the rectangular indicator for Feature Key 1 is on. Refer to the Dialogic® PBX Integr

4. PBX Systems The data used to display information in the LCD alphanumeric display is in ASCII format. When the telephone is not in use, the display

Dialogic® PBX Integration Board User’s Guide to the display. The calling number ID data sent from the PBX to the station set differs from the calling

4. PBX Systems The display when the Ring comes in and the LED flashes is: “Call for: 108 ” The display shows the correct cal

Dialogic® PBX Integration Board User’s Guide messages. However, you can use the dx_dial( ) function as described so that your application will mainta

4. PBX Systems Integration Board connected to the Hicom 150 PBX. The following parameters must be set: • D4BD_MSGACCESSON (0x0A) to store the featur

Dialogic® PBX Integration Board User’s Guide Example With the Hicom 150, an application uses the d42_display( ) function to retrieve the display data

4. PBX Systems 16 17 18 19 20 21 22 23xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xxDataDataByteByte01 00 00 00 00 00 00 00

Dialogic® PBX Integration Board User’s Guide Table 34. DTerm III Series LCD Indicator States ... 153 Table 3

Dialogic® PBX Integration Board User’s Guide Aborting a Transfer A transferred call can be aborted at any time (prior to completing the transfer) by

4. PBX Systems 4.4. Mitel Superswitch PBXs Mitel PBXs use digital signaling to control its station sets and digitized voice. Digital Network Interfa

Dialogic® PBX Integration Board User’s Guide The MWI feature access code must be programmed in specific personal keys in the Mitel 430 and Mitel 420

4. PBX Systems 5. Press <ESC>4 to commit to the changes. 6. Assign a COS to the desired station(s) from main menu option System Forms | Form

Dialogic® PBX Integration Board User’s Guide 4. Exit Programming Mode. For more information, see the Mitel Superswitch manuals. Phone-Side Programm

4. PBX Systems For SX-2000 PBXs and a SuperSet 430 phone: a) Press the desired personal key (10 or 11). b) Press the Change key soft-key. c) Press

Dialogic® PBX Integration Board User’s Guide 4.4.2. Using the Dialogic® PBX Integration Board The Dialogic® PBX Integration Board emulates functions

4. PBX Systems Personal KeysLineIndicatorsSpeakerRedialCancelTrans/ConfSuperkeyMicrophoneMessageVol umeToneContrastVol umeToneContrastFunctionKeysDi

Dialogic® PBX Integration Board User’s Guide Personal KeysLineIndicatorsFunctionKeysDisplay KeysMain Display123456789*0#MQSPRUNV Figure 9. Mitel S

4. PBX Systems Table 15. Mitel Superset 420/430 LCD Line Indicator States State Value (Hex) Off 0x00 On 0x01 Ringing 0x02 Hold 0x03 Error 0x04 Unkno

List of Figures Figure 1. Dialogic® PBX Integration Board Functional Block Diagram... 33 Figure 2. Avaya 7434 Telephone...

Dialogic® PBX Integration Board User’s Guide Byte Key Description Dial String 10 Personal Key 10 <ESC>KK 11 Personal Key 11 <ESC>KL

4. PBX Systems Example An application uses the d42_indicators( ) function to retrieve the current data for the LCD Line Indicators for a given channe

Dialogic® PBX Integration Board User’s Guide 4.4.4. Function Keys As shown in Figure 8 and Figure 9, there are a number of Function Keys found to th

4. PBX Systems Table 19. Mitel Superset 430 Direct Key Dialing Strings for Function Keys Dial String Key Description <ESC>KM Message Key <

Dialogic® PBX Integration Board User’s Guide The data location for the Display Key prompts is as follows: Display Key 00 bytes 16 - 20 Display Key

4. PBX Systems Mitel Superset 420 or 430 Phone with SX-200 or SX-2000 PBX As shown in Figure 9, there are six Display Keys or Soft Keys located below

Dialogic® PBX Integration Board User’s Guide Table 20. Mitel Superset 420 Direct Key Dialing Strings for Display Keys Dial String Key Description

4. PBX Systems • saved number for redial • timed reminder setting • call forward type and destination • calling number ID • trunk line ID The da

Dialogic® PBX Integration Board User’s Guide Example An application uses the dx_dial( ) function to press the “SuperKey” key and “Display Key 1” for

4. PBX Systems data sent to the display. Refer to the Dialogic® PBX Integration Software Reference for more information about using d42_gtcallid( ) f