Dynacord Telephone DTI 2000 User Manual

Owner’s Manual  
DTI 2000  
DIGITAL TELEPHONE INTERFACE  
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Controls and Connections  
front view  
1. POWER indicator  
The POWER LED lights when the DTI 2000 receives power input from the supplied power supply  
unit, which allows worldwide connection and use because it accepts input voltages between 85V  
AC and 250V AC.  
2. SEIZE / DROP key (SELECT)  
This key allows manually accepting or cancelling phone calls and is mostly used for testing. When  
an incoming phone call is present (ringing), pressing the SEIZE / DROP key establishes the  
connection (picks up). Pressing the SEIZE / DROP key again cancels (hangs up) a live connection.  
Since the DTI 2000 automatically picks up any incoming call respectively automatically hangs up  
when the remote call is terminated, this key is basically not needed during normal operation.  
3. DROP and SEIZE indicators  
The red DROP LED indicates that there are no live connections (i.e. the DTI 2000 is on-hook).  
The green SEIZE LED indicates that the DTI 2000 established a connection to the calling party  
(i.e. the DTI 2000 is off-hook). The DTI 2000 automatically connects to incoming phone calls.  
Using the internal DIP-switch S202 allows specifying the number of rings prior to accepting a call.  
4. TALK indicator  
The orange TALK LED lights whenever the DTI 2000 is in announcement mode (i.e. when an  
announcement into a single or several zones of the PA-system has been initiated via telephone  
connection).  
5. LEVEL control / meter bars  
Audio signals that are transmitted from the DTI 2000 to the DPM 4000 System Manager can be  
monitored using the TO PAGING MANAGER meter bar. Level adjustment is possible via the  
associated LEVEL control on the front panel using a small screwdriver. The level setting range is  
between ***dB (counter clockwise stop) and ***dB (clockwise stop).  
Currently, the TO TELEPHONE indicator and the associated level control are not used.  
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Rear  
6. TO PAGING MANAGER connectors, female  
The two TO PAGING MANAGER connectors represent the interface to the DPM 4000 System  
Manager. Using either the 9-pole D-Sub connector or the 6-pole RJ-12 socket (simultaneous use  
of both terminals is not possible) to establish audio and data connection to the DPM 4000 is  
possible. The DTI 2000 needs to be connected to one of the paging console inputs (DPC IN, RJ-45  
socket) on the DPM 4000. The needed interface cable (RJ-12 to RJ-45) with a length of 3.5m is  
supplied.  
7. DATA indicator  
The DATA LED indicates that data is being transmitted between DTI 2000 and DPM 4000  
System Manager. Therefore, it serves as main monitoring indicator for correct data connections.  
8. DIP switch for address and operation mode settings  
The DTI 2000 allows setting an address between 1 and 16. CAUTION: Make sure never to  
connect two or more appliances with identical address settings to the DPM 4000 System Manager,  
since this would inevitably result in data conflicts. This also includes the address settings of the  
connected paging consoles.  
Please refer to the chapter DIP-switch settings for further details.  
9. Phone sockets  
Two telephone connectors are located on the rear panel of the DTI 2000. Connect the PHONE  
LINE socket with your telephone wall outlet. The LOOP THRU socket offers connection for a  
telephone set.  
10. POWER SUPPLY connector  
Connect the supplied power supply unit to this connector by inserting the round plug of power  
supply unit into the POWER SUPPLY socket on the rear panel of the DTI 2000. Turn the plug’s  
locking ring in clockwise direction to establish a reliable connection. Afterwards, connect the  
supplied mains cord to the power supply unit before inserting the mains plug into a mains wall  
outlet.  
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Se Up and Connections  
1. Unpacking  
The DTI 2000 package contains the following parts:  
1 DTI 2000 Digital Telephone Interface  
1 power supply unit, 100 – 240V AC  
1 IEC mains cord  
1 interface cable for DPM 4000 connection, RJ-12 to RJ-45  
1 telephone cable, RJ-11 to TAE  
1 owner’s manual  
Make sure that everything is complete and that nothing is damaged. Otherwise, immediately  
contact your dealer or the TELEX / EVI Audio service department.  
2. DIP switch settings  
The DTI 2000 provides a single DIP-switch on the rear panel and two internal DIP-switches.  
Theses switches are meant for making specific basic settings, which have to be made before  
operating the appliance for the first time. Generally, no changes need to be made during the later  
operation.  
2.1 DIP switch for address and operation mode settings on the rear panel (S201)  
A switch is “OFF” when it is set to its upper position. Consequently the ON-position is down.  
The following table shows how to set addresses using the switches 1 – 4:  
SW1 SW2 SW3 SW4 ADDRESS  
OFF OFF OFF OFF  
ON OFF OFF OFF  
OFF ON OFF OFF  
ON ON OFF OFF  
OFF OFF ON OFF  
ON OFF ON OFF  
OFF ON ON OFF  
ON ON ON OFF  
OFF OFF OFF ON  
ON OFF OFF ON  
OFF ON OFF ON  
ON ON OFF ON  
OFF OFF ON ON  
ON OFF ON ON  
OFF ON ON ON  
ON ON ON ON  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
CAUTION:  
Make sure never to connect two or more  
appliances with identical address settings to  
the DPM 4000 System Manager, since this  
would inevitably result in data conflicts.  
This also includes the address settings of the  
connected paging consoles.  
Switches 5 – 7 provide no function and should be left in their OFF-position (up).  
Switch 8 serves for switching between normal operation and download mode. Leave this switch  
(SW8) in its OFF-position (up) for normal operation. Download mode is meant for updating the  
software and loading country-specific settings by DYNACORD or one of its service centers.  
SW8  
OFF  
ON  
DTI 2000 MODE  
Normal  
Download  
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2.2 Internal DIP switches (S202 and S203)  
To make any changes to the internal DIP-switch settings, you first have to remove the cover plate  
by loosening/removing the screws on the rear panel, as indicated in the diagram below.  
Remove these screws  
Loosen these screws  
Slightly lift the cover plate at the rear and remove it. Now you are able to change the DIP-switch  
settings.  
For installing the cover plate back in place, first position the case top in the guidance slots of the  
case bottom and slide it in as far to the front until it rests in place. Put the screws back in place and  
tighten them. Do not forget to tighten the previously loosened screws.  
The following picture shows the positions of DIP-switches S202 and S203:  
Internal DIP-switch S202  
Internal DIP-switch S203  
DIP-switch S202 allows setting the ring count, which controls the number of rings before the DTI  
2000 automatically picks up and establishes a connection. To change the ring count use the  
switches 1 - 2. The DTI 2000 is factory pre-set to accept an incoming call after one ring (SW1 &  
SW2 = OFF).  
SW1 SW2  
OFF OFF  
ON OFF  
OFF ON  
ON ON  
RING COUNT  
1
2
4
8
Switches 3 – 8 are not used and should be left in their OFF-position.  
The setting of DIP-switch S203 determines the timeout of a connection (i.e. before the DTI 2000  
automatically hangs up). This ensures that phone line and PA-system are not blocked any longer  
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than the specified maximum connection timeout setting allows. If the caller does not enter any  
new selection during the connection timeout, the DTI 2000 automatically finishes the momentary  
announcement and releases the PA-system. Afterwards, the telephone connection is disconnected  
as well.  
Switches 1 – 4 are used to set the maximum timeout for a connection as indicated in the following  
table:  
SW1 SW2 SW3 SW4 TIMEOUT  
OFF OFF OFF OFF  
ON OFF OFF OFF  
OFF ON OFF OFF  
ON ON OFF OFF  
OFF OFF ON OFF  
ON OFF ON OFF  
OFF ON ON OFF  
ON ON ON OFF  
OFF OFF OFF ON  
ON OFF OFF ON  
OFF ON OFF ON  
ON ON OFF ON  
OFF OFF ON ON  
ON OFF ON ON  
OFF ON ON ON  
ON ON ON ON  
OFF  
20 sec.  
30 sec.  
45 sec.  
60 sec.  
75 sec.  
1.5 min.  
2 min.  
2.5 min.  
3 min.  
3.5 min.  
4 min.  
5 min.  
6 min.  
8 min.  
10 min.  
CAUTION:  
The DTI 2000 is factory pre-set to a  
maximum connection timeout of 1.5  
minutes (SW1 = OFF, SW2 = ON, SW3 =  
ON, SW4 = OFF).  
Setting the switches 1 – 4 to their OFF-  
position specifies an infinite timeout, i.e. the  
connection is not automatically  
disconnected.  
Switches 5 – 8 are not in use and should be left in their OFF-position.  
3. Rack installation  
There are two rack-mounting options for the DTI 2000. Use the MCP-2 rack installation kit for  
installing a single DTI 2000 and the MCP-1 for installing two units next to each other in a rack  
system. The following diagram shows both options.  
4. Connections  
4.1 Connecting the DPM 4000 System Manager  
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Use one of the TO PAGING MANAGER sockets (not both simultaneously) for connecting the  
DTI 2000 to the DPM 4000. The DTI 2000 needs to be connected to a paging console input (DPC  
IN, RJ-45 socket) of the DPM 4000 using the supplied, 3.5m long interface cable (RJ-12 to RJ-  
45). The following diagrams show the pin-assignment of sockets and cables. The LED labelled  
DATA is located next to the sockets. This LED lights during active data transmission between  
DTI 2000 and DPM 4000 System Manager providing indication of a correct connection.  
TO PAGING MANAGER connector’s pin-assignment  
Interface cable RJ-12 / RJ-45  
4.2 Connecting Phone Lines or a Telephone set  
Two phone connectors are located on the rear panel of the DTI 2000. Connect the PHONE LINE  
socket with the telephone wall outlet. The LOOP THRU socket provides a connection facility for  
an optional telephone set.  
NOTE: The LOOP THRU signal is disconnected whenever the DTI 2000 picks up a phone call via  
the PHONE LINE socket.  
4.3 Power Supply  
Insert the supplied power supply unit’s round plug into the POWER SUPPLY socket on the rear  
panel of the DTI 2000. Turn the plug’s safety lock clockwise to establish a securely locked  
connection. Afterwards, connect the supplied mains cord to the power supply unit before inserting  
the mains plug into the mains wall outlet. The DTI 2000 is immediately operational upon  
establishing accurate connection.  
5. Adjusting the Audio Level  
Adjusting the level of the audio signal that is transmitted to the DPM 4000 System Manager is  
possible via the LEVEL TO PAGING MANAGER trimmer. Doing so, use a small, flat  
screwdriver to first set the trimmer to its centre position. Call the DTI 2000 and speak with a  
normal voice into the receiver while adjusting the audio signal level for best transmission quality.  
The level meter should not indicate any signals in the red area.  
The TO TELEPHONE indicator and the corresponding control are not currently used.  
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6. Country settings  
Different countries and regions have different telephone standards, which may differ in e.g. signal  
level and dial tones. The DTI 2000 can be and should be configured to meet those individual  
requirements. Not doing so can result in faulty operation of the DTI 2000.  
Generally, the DTI 2000 is factory pre-set prior to shipping. In case of problems, please contact  
the nearest service-centre or the technical support.  
Operating the DTI 2000  
First, make sure that the DTI 2000 has been correctly installed and connected, as described before. Be  
sure to check the address and DIP-switch settings.  
The DTI 2000 has a Default Configuration, which suits most standard applications. Custom  
configuration of the DTI 2000 is possible using the PC Designer Software, which is explained in detail  
in the chapter “Configuring the DTI 2000”.  
DTI 2000 Default Configuration:  
DTI 2000 Parameters Default Configuration  
Remarks  
NAME  
COMP  
DTI-2000  
OFF  
OFF  
OFF  
OFF  
OFF  
INT  
4350  
111,2222  
NONE  
Default Name  
No meaning in the DTI 2000  
No meaning in the DTI 2000  
No meaning in the DTI 2000  
No meaning in the DTI 2000  
No meaning in the DTI 2000  
No meaning in the DTI 2000  
No meaning in the DTI 2000  
Level 1 / Level 2 passwords  
BUZZER  
PRECHIME  
GERMAN  
DOSCHAR  
PTTPRIO  
EXT  
PASSW  
GROUP0  
No groups programmed  
GROUP20  
KEY1  
KEY2  
NONE  
SELECT 1  
SELECT 2  
Call number table:  
No. 1 (01) = Zone 1  
No. 2 (02) = Zone2  
...  
No .99 = Zone 99  
No. 0 (00) = Zone 100  
KEY99  
SELECT 99  
SELECT 100  
DISABLED  
TALK,255,0,20  
DISABLED  
KEY100  
KEY101 … KEY107  
KEY108  
KEY109 … KEY112  
No meaning in the DTI 2000  
Talk in actual selection with priority 2  
No meaning in the DTI 2000  
The DTI 2000 decodes all DTMF dial tones as well as signal tones for the recognition of incoming  
phone calls, pressed keys and determination whether a connection has been dropped or if the calling  
party hung up. Each one or two-digit number between 0 (00) and 99 represents an individual function,  
which is assigned in a calling numbers table (either in the Default Configuration or via user  
configuration). Three or four-digit numbers are used for entering passwords. The asterisk (*) and hash  
mark (#) keys offer special functions; e.g. as separator, for clearing faulty entries (Clear), as talk  
button, or to drop a connection.  
1. Telephone call to the DTI 2000  
Simply dial the number of the telephone line to which the DTI 2000 is connected. You are  
presented either with a ring signal when the line is not busy, or otherwise with a busy signal when  
the line is already busy. After the specified ring count (refer to DIP-switch S202) the DTI 2000  
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accepts the call and establishes a connection. First, you will hear a short noise (DTI 2000 line test)  
followed by different tone signals, which indicate that the DTI 2000 expects further entries.  
2. Password Entry  
The DTI 2000 answers an incoming phone call with different tone signals, depending on its actual  
status. When not password-protected, a single tone signal indicates that the DTI 2000 is ready to  
accept a function command (via entering a one or two-digit function number). If protected b a  
password, the appliance answers incoming calls with a two-tone signal. Entering the password for  
the desired access level is necessary. To enter access level 1 you have to enter a three-digit  
password, for entering access level 2 a four-digit password is needed. While level 1 only provides  
access to zone and group selection plus launching announcements via the * key, level 2 allows  
accessing all functions (announcements, text message playback, macros, stop, etc.). After entering  
the correct password, the DTI 2000 acknowledges a request with a single tone signal. The DTI  
2000 sends a two-tone signal when entering the wrong password. After entering the incorrect  
password three times in a row the DTI 2000 drops the connection.  
3. Zone / Group Selection and Announcements  
Once the DTI 2000 is ready to accept a command (indicated by a single tone signal) and access  
level 1 (or 2) has been activated, selecting a single or several zones, groups or the ALL-group and  
then making an announcement in the selected areas is possible. Selecting a single zone, group or  
ALL is possible through entering the one or two-digit code that represents the according selection  
function in the call number table. Selecting further zones / groups is possible by using the hash  
mark key (#) as a separator before entering the next number, and so on. Numbers not representing  
a selection or clear-function are ignored. Announcements are initiated via the asterisk key (*). The  
DTI 2000 indicates with a single tone signal that a selection has been made and that you can start  
making your announcement. A “Low Busy” signal (two-tone sequence – tones with different key)  
indicates that one or several low priority zones are busy. It is your decision whether you want to  
wait (enter #), or to interrupt the current announcement (enter * once again). A “High Busy” signal  
(rapid, high-pitch sequence of tone signals) indicates that one or several high priority zones are  
busy. Once the announcement is finished, you can enter an announcement end mark through using  
the hash mark key (#). The connection is not dropped, which enables you to select new zones or  
groups for making further announcements. Pressing the asterisk key after an announcement is  
finished drops the connection – the DTI 2000 “hangs up”.  
4. Direct Call  
The DTI 2000 allows making announcements in permanently pre-selected zones or groups (Direct  
Call). This function can only be accessed from access level 2. No other number selection is  
accepted if the selected one or two-digit number represents a talk function. Press the asterisk key  
(*) to launch an announcement. The DTI 2000 acknowledges this request with a single tone signal,  
indicating that it is operational and ready to accept your announcement. The DTI 2000 outputs a  
“High Busy” signal when one or several high priority zones are busy. After the announcement is  
finished, pressing the hash mark key (#) allows selecting other functions. Using the asterisk key  
(*) drops the connection.  
5. Text Playback  
The DTI 2000 offers the ability to playback pre-recorded text messages in permanently pre-  
selected zones. This function can only be accessed from access level 2. No other number selection  
is accepted if the selected one or two-digit number represents a text message function. Press the  
asterisk key (*) to launch text message playback. The DTI 2000 acknowledges this request with a  
single tone signal, indicating that it is operational and ready to accept desired function command.  
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The DTI 2000 outputs a “High Busy” signal when one or several high priority zones are busy. A  
tone-sequence indicates that a text message is being played back. Text message playback normally  
stops automatically but manually stopping the function is possible as well by entering the STOP-  
function number code (default setting = 0 respectively 00).  
6. Macros  
The DTI 2000 allows launching macros that are programmed in the DPM 4000 System Manager,  
thus providing access to special functions. For example: switching relays, starting and stopping  
signals, entering parameters, launching test sequences, and many others. The macro function can  
only be accessed from access level 2. No other number selection is accepted if the selected one or  
two-digit number represents a macro function. Pressing the asterisk key (*) launches a macro. The  
DTI 2000 acknowledges this request with a single tone signal, indicating that it is operational and  
ready to accept desired macro command. It sends a two-tone signal, when entering an incorrect  
command or if there is any other problem.  
7. Cancelling a Function (Break)  
Cancelling an announcement is possible using the hash mark key (#) (Break). The current zone  
selection is cancelled as well, while the connection to the DTI 2000 is not interrupted. The  
appliance acknowledges the request with a single tone signal and it is ready for new entries (a new  
zone selection, launching text message playback, triggering macros).  
The hash mark key (#) can also be used to clear erroneously made entries. Using the hash mark  
key (#) directly after selecting a text, announcement, macro or stop function prohibits the function  
from being executed, but erases it instead. The DTI 2000 is ready for new entries.  
8. Hang Up / Cancelling a Connection  
Using the asterisk key (*) directly after making an announcement or pressing the hash mark key  
(#) forces the DTI 2000 to drop the connection and “hang up”. The DTI 2000 also interrupts the  
connection when the calling party hangs up. However, in that case, a few busy tone signals are  
output via the PA-system, which can be rather disturbing. Therefore, dropping the connection  
through the use of the asterisk key (*) is always preferable.  
The DTI 2000 can also be configured to automatically drop a connection after a definable period  
of time. This is especially useful to prevent the PA-system from being blocked by a telephone  
announcement over longer periods or that it is constantly blocked because of malfunction or faulty  
connections. The period of time after which the DTI 2000 automatically drops a connection can be  
set in a range between 20 seconds and 10 minutes via the internal DIP-switch S203.  
Configuring the DTI 2000  
The PC Designer software allows custom configuration for the DTI 2000 to match any specific  
application. The programming procedure is equivalent to configuring a paging console. Programming  
a paging console’s function keys relates to the programming of a call number table for the DTI 2000.  
This table holds the assigned functions of up to 100 one or two-digit numbers (0 to 99). The buttons 1  
to 99 on a console correspond to the call numbers and the table entries 1 to 99. The 100-key represents  
the call number or table entry 0 (respectively 00) and, as standard, another entry in the table is  
reserved for the talk function, which can be activated from a telephone set using the asterisk key (*).  
Using a DPC 4550 + DPC 4350 paging console in the PC Designer software for configuring the DTI  
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2000 is recommended, because this is the only way to gain access to the total amount of 100 call  
numbers (accordingly to 100 paging console keys).  
Connect a DPC 4550 + DPC 4530 to the corresponding input at the DPM 4000 in the PC Designer  
Software, give it a meaningful name (e.g. telephone interface), and open the paging console dialog  
with a double-click on the paging console icon.  
The paging console dialog allows assigning one of the following functions per each call number (0 ...  
99) respectively for each entry in the table:  
1. Disabled:  
The call number #nn has no function.  
2. Stop:  
Stops the actually active audio signals (chime, text message playback, alarm) depending on the  
programmed stop function and priority.  
3. Clear:  
Clears the actual zone or group selection.  
4. Select:  
This function selects a zone, group (groups may include up to 100 zones) or all zones (collective  
call) for an announcement or text message playback.  
5. Text:  
This function starts text message playback in permanently pre-selected zones or groups or in the  
actual zone selection. Assigning priorities is possible.  
6. Talk:  
This function starts an announcement in selected zones or groups. It also provides the possibility  
to initiate a collective call in all zones. A permanently assigned zone or group as well as the actual  
zone selection can be defined as a target. Assigning priorities as well as programming a pre-chime  
signal is possible.  
A special entry in the table is reserved for the standard talk function (corresponds to the talk  
button #108) , which can be activated from a telephone set using the asterisk key (*).  
7. Macro:  
This function starts a macro via its pre-defined macro number, which of course is only possible  
when a corresponding macro has been programmed in the DPM 4000.  
A typical call number table might look like that:  
Phone No. /  
Function  
Parameters  
Priority Remarks  
Tone Dial  
Code  
1 (or 01)  
2 (or 02  
3 (or 03)  
9 (or 09)  
10  
11  
SELECTION Zone 1  
SELECTION Zone 2  
SELECTION Zone 5  
0
0
0
0
Selects Zone 1  
Selects Zone 2  
Selects Zone 5  
Selects group 2  
Selects group 5  
Selects all zones / groups  
SELECTION Group 2  
SELECTION Group 5  
SELECTION ALL groups  
0
0
30  
49  
50  
59  
EMPTY  
EMPTY  
TEXT  
0
0
0
0
4
7
No function  
No function  
Starts text No. 2 in group 3 with priority 4  
Group 3, Text 2  
All groups, Text 3  
TEXT  
Starts text No. 3 in all zones with priority 7  
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60  
TALK  
All groups  
9
Starts an announcement in all zones with  
priority 9  
70  
71  
99  
0 (or 00)  
Nr. 15  
Nr. 16  
0
0
0
0
5
MACRO  
MACRO  
CLEAR  
STOP  
Triggers macro No. 15  
Triggers macro No. 16  
Clears the actual zone / group selection  
Stops audio signals with a lower priority than 5,  
which have been launched from the DTI 2000  
Starts an announcement in the current selected  
zone(s) with priority 3  
0
*
TALK  
Current selection  
3
Setting the DTI 2000’s password codes is possible in the general paging console dialog. The two  
access levels have individual passwords. The default password settings are 111 (3-digit for user level  
1) and 2222 (4-digit for expert level 2). Access level 1 only allows zone / group selection and making  
announcements through the use of the asterisk key (*) while the expert level 2 provides access to all  
functions (announcements, text message playback, macros, stop, etc.). Password-protection is inactive,  
so that anybody has access to the functions of the corresponding level, when entering “0” as a  
password.  
In the DTI 2000, the attributes microphone compressor, tone signal and German date have no function  
and should be left at their default setting.  
DTI 2000 Operation Example  
Based on the configuration example of the previous chapter, the following commands can be carried  
out through the DTI 2000:  
Function  
Dial Numbers  
0123 456789  
111 or 2222  
1*  
Remarks  
Connection number  
Password  
Select the phone number of the DTI 2000 connection  
Select the password for access level 1 or 2  
Selects zone 1, starts an announcement with priority 3  
Stops an announcement while keeping the connection  
Announcement in a single zone  
Announcement end  
#
2#3#9*  
Announcement in several zones /  
groups  
Selects zones 2, 5 and group 2, starts an announcement  
with priority 3  
*
Hang up  
Stops an announcement and drops the connection  
Selects all zones, starts an announcement with priority 3  
Selects zones 1, 2 and 5, clears the selection  
Starts text No. 2 in group 3 with priority 4  
Stops text No. 2 (if launched from the DTI 2000)  
Starts an announcement with 9 in all zones  
Starts macro No. 15  
11*  
Collective call  
1#2#3#99  
50*  
Clear incorrect selection  
Start text message playback  
Stops text message playback  
Direct call  
0*  
60*  
70*  
Start macro  
71#  
Clear incorrect function entry  
Clears an erroneously made entry of macro No. 16  
(does not start the macro)  
*
Hang up  
Stops an announcement and drops the connection  
*** DTI 2000 tone signals (table)  
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Test Functions  
The processor system automatically runs an initial self-test whenever the DTI 2000 is connected to the  
mains. During this procedure, first the red DROP LED should light. Afterwards, the orange TALK  
LED blinks for approximately 3 seconds. In case faulty operation is being recognized, the processor  
system stops and the DROP and TALK LEDs light. Otherwise the DROP LED is dimmed and only  
the red DROP LED lights as long as a telephone connection has not been established.  
Pressing the SEIZE / DROP button on the front panel manually establishes a connection (pick up) or  
drops a connection (hang up). When the button is used to “take a call”, the green SEIZE LED should  
light and the red DROP LED should be dimmed. Pressing the key once again drops the connection and  
the red LED lights while the green LED is dimmed.  
The orange TALK LED lights when the DTI 2000 is in announcement mode (i.e. when a telephone  
announcement in a single or several zones of the PA-system has been activated).  
Specifications  
Audio Output level  
Telephone Input Level  
S/N Ratio  
0 dBu ... +20dBu  
-30 dBu ... +6 dBu  
> 60 dB (200 Hz ... 3.8 kHz)  
300 Hz ... 3.8 kHz (+0 / -6 dB)  
Frequency Response  
Phone Line Connectors  
DPM 4000 Interface  
2 x RJ-11 (Line / Loop Thru)  
RJ-12, DB-9 sockets  
Power Supply  
100 ... 240 V AC, 50 / 60 Hz  
Temperature Range during Operation 0 °C … 50 °C  
Dimensions  
Weight  
208 x 44 x 203 mm (B x H x T), ½ 19“ / 1 HU  
2.0 kg  
Certifications  
CE, UL, FCC  
- Design and specifications are subject to changes without further  
notice -  
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14  
 

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