NEC Infoset 408 System Manual

InfoSet 408Issue 1A
System Manual5 - 5
 
SECTION 3  INSTALLING ADAPTERS
3.1 ACA-U Unit  (AC Adapter)
This unit provides power to ancillary devices or Attendant Consoles.  The
ACA-U Unit must be connected to an adapter that is installed on a
telephone.  If more than one adapter is installed on a telephone, only one
ACA-U Unit is necessary.
The power requirements for the ACA-U Unit are:

Input:  120V AC, 60 Hz, 30W

Output:  24V DC, 750 mA

Polarity:  
3.1.1 Connecting the ACA-U Unit
1. Unplug the line...

Issue 1AInfoSet 408
5 - 6Optional Equipment 3. Locate the AC adapter plug on the ancillary device that is
connected to the bottom of the telephone and plug in the AC
adapter.      
3.2 ADA-U Unit  (Ancillary Device Adapter)
Ancillary Device Adapters allow connection of a tape recorder to Electra
Elite telephones.
When installing an ADA-U Unit, first connect the cables to the ADA-U Unit,
set the dip switches, and then install the ADA-U Unit on the telephone.
When installing the ADA-U Unit, the cables and...

InfoSet 408Issue 1A
System Manual5 - 7
   
3. Remove the cap on the adapter terminal to expose the
metal receptacle. Push the cable in the applicable
receptacle, and replace the cap. Line up the slot on the cap
with the slot on the metal receptacle to ensure proper
contact.    
4. Insulate the end of the cable that needs to be shielded with
insulating tape.
Table 5-1 ADA-U Cable Connections provides a list of cable
connections to ADA-U ADP terminals and describes the
specifications for the terminals....

Issue 1AInfoSet 408
5 - 8Optional Equipment
Table 5-1  ADA-U Cable Connections 
Te r m i n a l
NumberCables to Connect Terminal Specifications
T1When warning tone is not being 
sent from the recorder, connect 
wire pair input from tone 
generator to T1:T2.  The 
warning tones from the 
generator are sent to T1:T2 on a 
dedicated wire pair while the 
speech path is sent from the 
ADA-U on T3:T4 over a 
separate wire pair to the 
recorder.Input Terminal:  T1 and T2 are enabled for 
tone generating device...

InfoSet 408Issue 1A
System Manual5 - 9
Notes:

When recording in handsfree (half-duplex) mode using the built-in
speakerphone, the record warning tone may not be audible to the far-end party. 

The transmit recording level is lower than the receiving voice level for intercom 
calls; the transmit recording level for CO calls is normal.

Depending on the recording device(s), separate cables may be required for the 
warning tone and speech path.  In this case, connect the warning tone cables to 
input...

Issue 1AInfoSet 408
5 - 10Optional Equipment 3.2.2 Switch Settings
The DIP Switch is located at the bottom center of the ADA-U
Unit. The DIP Switch allows a technician to configure the board
to specific settings. Figure 5-12 ADA-U Unit Switch Settings
shows the default settings. 
The following switch settings should be made on the ADA-U Unit
to enable or disable the record start warning tone. Switch
settings should be made before installing the ADA-U Unit in the
telephone. 
  Figure 5-12   ADA-U Unit...

InfoSet 408Issue 1A
System Manual5 - 11 3.2.3 Installing an ADA-U Unit on an Electra Elite Telephone
1. Unplug the telephone cord from the telephone.
2. Prepare telephone for adapter installation as described in
Section 2 Preparing the Telephone for Adapter Installation
on page 5-1.
3. Plug the ADA-U Unit connector into the receptacle
connector on the back of the telephone.  Snap the ADA-U
Unit into the hooks on the telephone to secure it.   
4. Replace base plate.
SW1–5
and
SW1–6SW1–5
OFFSW1–6
ONInput...

Issue 1AInfoSet 408
5 - 12Optional Equipment 5. Lead the audio cable out through the groove on the base
cover.  Plug in the telephone cord.      
3.3 APR-U Unit  (Analog Port Ringer)
The Analog Port Adapter with ringing is the interface for installing single
line telephones, modems, and other compatible analog devices.  The
APR-U Unit also generates ringing signals.  By providing ring generation,
the user can install a personal fax machine or an answering machine for
convenience.  Two user-adjustable...

InfoSet 408Issue 1A
System Manual5 - 13 3.3.1 Installing an APR-U Unit on a Telephone
1. Prepare telephone for adapter installation as described in
Section 2 Preparing the Telephone for Adapter Installation
on page 5-1.
2. Plug the unit into the receptacle connector inside the base
plate.  
3. Plug the cord of the ACA-U Unit (AC adapter) into the jack
on the APR-U Unit.  Lead the telephone cord out through
the groove in the base as shown in the diagram.     
Figure 5-16   Attaching the Unit to the...

Issue 1AInfoSet 408
5 - 14Optional Equipment 4. Close the base plate, lead the AC adapter cord out through
the hole, and snap the cover in place.     
5. Install a ferrite core (provided with the APR-U Unit) by
looping the line cord through the core between the terminal
(one inch from the terminal) and the ESI port.  This core is
only used with the APR-U Unit. 
6. Plug in the power cord on the AC adapter and the telephone
cord in the jack.
3.3.2 Switch Settings
There are two switch settings on the APR-U...