Vodavi Starplus Dhs/dhs-e Technical Manual

							2-48DHS Installation
Figure 2-26: External Paging Equipment Installation
Conditions
†If the one-way paging equipment requires DTMF signaling from the key telephone, 
then an unused CO Line should be dedicated for proper page interface.
†For Talk-back Paging or Multi-zone External Paging, the manufacturer recommends 
using a vacant CO line port for best operation.
†A 600 ohm interface is provided on every CO line; therefore, any available CO line may 
be used for paging. 
†Since all CO line dialing is subject to toll restriction, a CO line port will not connect the 
stations audio until at least one DTMF digit is dialed.
†It may be necessary to assign the CO line being used for paging as a PBX type trunk 
with one-digit or two-digit access. Therefore, normally toll restricted extensions may 
still make external pages, without being restricted.
Page VolumeExternal Page 
						

							DHS Installation2-49
12. External Music Source 
The Basic KSU is shipped with the Standard MOH/BGM Module. This module is located on 
a stand-off post toward the upper right corner of the CPU Module when viewing the 
installed KSU. The module provides a 1/8 in. phono jack (refer to Figure 2-25: 1/8 in. Phono 
Jack) labeled JK1 MOH JACK for direct connection to an external music source. The 
system music input impedance is 2 ohms. A trim Potentiometer (POT) is also provided on 
the Standard MOH Module for signal attenuation. 
Music Level Adjustment
1. Set the trim POT (labeled VR1 MOH VOL) at about mid-point.
2. Access an idle CO line, and dial into the system on another CO line.
3. When the system begins to ring, press [HOLD] to place the first call on hold.
4. Answer the ringing CO line. You should hear the MOH from the previous (now 
holding) CO line.
5. Adjust the music level at the source. That is, use the volume control of the music 
source to adjust the MOH level to a desirable level.
6. If the music begins to sound distorted do not increase the source level any further. 
Rather, adjust the source level down slightly and use the trim POT for further 
adjustment.
7. If a comfortable desired music level cannot be obtained using these techniques, it is 
likely that the music source is not properly matched to the MOH input circuitry.
External Music—Option Module
The Option Module may be installed for several feature upgrades. One of these upgrades 
is the addition of a second music source. When installed, the Option Module provides an 
MOH 1/8 in. phono jack (refer to Figure 2-25: 1/8 in. Phono Jack) labeled J2 MOH (located 
at the bottom-edge of the Option Module toward the right) that replaces the music 
circuit of the Standard MOH/BGM Module and an 1/8 in. phono jack labeled J4 BGM that 
adds a second BGM channel. J4 is located at the bottom edge of the Option Module 
center left.
To install the external music source:
1. Attach an 1/8 in., two-conductor, phono plug to one end of a length (5 ft. min.) of 
shielded cable.
2. Connect the other end of the cable to the speaker output terminals of the music 
source.
OR
3.  If the music source has an earphone jack, attach another 1/8 in. phono plug (or other 
specified connector) to the other end of the cable, and plug it into the earphone jack 
on the music source.
4. Plug in the AC power cord for the music source. If possible, use a separate AC outlet 
than the one being used for the KSU. Turn ON the AC power to the music source.
5. Insert the 1/8 in. phono plug into the appropriate music source jack inside of the KSU.
6. Since the MOH music source serves to provide MOH/BGM, it is best to adjust the 
input level such that MOH is at a comfortable level.
In some circumstances, there may be broadcast restrictions associated with music. Check 
with the original distributor and/or the radio station for copyright and broadcast 
restrictions concerning Background Music and Music-on-Hold. 
						

							2-50DHS Installation
To set a desirable MOH level:
1.  Set the trim POT (labeled VR1 MOH VOL) at about mid-point.
2.  Access an idle CO line, and dial into the system on another CO line.
3.  When the system begins to ring, press [HOLD] to place the first call on hold.
4.  Answer the ringing CO line. You should hear the MOH from the previous (now 
holding) CO line.
5.  Adjust the music level at the source. That is, use the volume control of the music 
source to adjust the MOH level to a desirable level.
6.  If the music begins to sound distorted do not increase the source level any further. 
Rather, adjust the source level down slightly and use the trim POT (labeled VR1 MOH 
VOL) for further adjustment.
7.  If a comfortable music level cannot be obtained using these techniques, it is likely 
that the music source is not properly matched to the MOH input circuitry. You may 
need a 600 ohm matching transformer to properly interface the music source.
8. The BGM music level can be attenuated using the trim POT VR3 BGM VOL.
13. Loud Bell Control 
When the Option Module is installed, the system provides a dry contact closure to signal 
externally powered alerting devices for any incoming CO Line call. Transferred CO Lines 
that recall system wide will also activate the LBC, in the same cadence as for an incoming 
CO Line ring.
Installation 
Figure 2-27: Loud Bell Control Installation
1. Determine which CO lines should operate the Loud Bell Control (LBC) relay. Program 
each of these lines separately for LOUD BELL = Y. 
2. Cut a length of cable to run from the MDF to the Option Module.
3. Attach a male 1/8 in. phono plug to one end of the cable.
4. Insert the 1/8 in. phono plug into the LOUDBELL jack (left-most 1/8 in. jack along the 
bottom edge of the Option Module).
The music source must be placed 5 to 10 ft. away from the KSU, to avoid any interference.
Bell Battery/Power
Supply
1/8 in. phono plug
the LBC jack on
Option Module 
						

							DHS Installation2-51
5. Terminate the other end of the cable on an industry standard 66M1-50 block for 
interconnection to the loud bell and power source.
6. Terminate the Loud Bell and power supply leads on an industry standard 66M1-50 
block.
7. Using cross-connect (jumper) wire connect each of the three LBC components 
(contact, bell and power source) in series fashion. 
14. 2-Port Analog Adapter 
The 2-Port Analog Adapter is used to connect analog SLTs and other analog devices to 
the system. The analog device must provide DTMF (touch tone) signals in order to make 
intercom calls, access outside lines and to activate system features. Some examples of 
analog devices are: telephone answering device (TAD), facsimile machine (FAX) or 
modem.
The 2-Port Analog Adapter is designed for installation at the MDF but may be positioned 
anywhere along the cable path between the KSU and the SLT (or other analog device).
1. The 2-Port Analog Adapter is contained in a wall mount enclosure with pre-drilled 
flanges for simple mounting. Properly mounted, the hinged cover will open upward 
and lock into position for servicing.
2. Inside the enclosure, the 2-Port Analog Adapter Printed Circuit Board (PCB) is seen 
with three RJ-11 modular jacks along the bottom edge of the PCB. One oriented 
toward the right side of the 2-Port Analog Adapter PCB is labeled IN. The other two 
jacks are labeled OUT1 and OUT2.
3. Extend each of these jacks to the MDF using modular cords and terminal blocks.
4. Once on the MDF, connect the IN jack to the desired digital station port to be used for 
analog device interface. This connection requires that the green and red wires 
( White/Blue pair) be used.
5. The modular jack OUT1 is now operational as an analog device port with the same 
station number that would have been used by a digital key telephone connected to 
this port.
6. The modular jack OUT2 is also now operational as an analog device port with a 
station number assigned from the upper range (B2 voice channel). The number 
assigned is from (58-81). Determining the number is done by association; if the B1 
voice channel station number connected to the 2-Port Analog Adapter is 11, then the 
The LBC output on the KSU provides only interrupted dry contact closure during the ringing 
period of incoming CO Lines.
Relay contact on DHS are rated at 24V DC 1.0 amp. Do not apply AC voltage to these 
contacts.
The 2-Port Analog Adapter is not an OPX device as determined by FCC Rules. Additional 
equipment is required to support OPX lines. The Analog Adapter will not support Message 
Waiting Indication for SLT devices. The Analog Adapter will supply Stutter Dial Tone to the 
user.
Do not exceed the maximum cable length from KSU to SLT regardless of where the 2-Port 
CO Module is installed. 
						

							2-52DHS Installation
B2 voice channel station number is 59 (the adapter’s channel station number plus the 
difference of 48). Use this relationship in numbering to determine the B2 channel 
station number, or simply dial an Executive Key Telephone from the B2 station port 
and read the display.
Figure 2-28: 2-Port Analog Adapter
15. 2-Port Analog Expander 
The 2-Port Analog Expander is a single PCB identical to the PCB of the 2-Port Analog 
Adapter. One 2-Port Analog Expansion may be housed in the 2-Port Analog Adapter 
enclosure. The expansion is shipped with screws used to secure it to the existing 2-Port 
Analog Adapter PCB stand-offs. Since the PCB and circuit function are identical to the 2-
Port Analog Adapter, follow the installation wiring instructions provided for the 2-Port 
Analog Adapter (Refer to 14. 2-Port Analog Adapter).
Installation
1. Position the 2-Port Analog Expander over the stand-off posts that are factory 
installed on the 2-Port Analog Adapter PCB.
2. Using the screws supplied with the 2-Port Analog Expander, secure the 2-Port Analog 
Expander PCB to the stand-off posts (refer to Figure 2-28).
Only one 2-Port Analog Expander can be installed in a 2-Port Analog Adapter housing.
OUT 2 OUT 1IN
2 Port Analog Adapter
OUT 2 OUT 1IN
2 Port Analog Expander 
						

							System Check-Out2-53
16. Headset Installation 
The system supports integrated headset operation. Customers may take advantage of 
this standard system feature at any key telephone. Most headsets will operate without 
extra equipment or need for additional steps in user operation.
Installation
1. A headset adapter that uses a toggle switch to select between Headset and Handset 
use is desirable. The headset adapter is plugged directly into the Handset jack. 
2. The telephone handset is then plugged into the headset adapter. 
Non-amplified headsets receive operating voltage from the headset circuitry built into 
the phone (refer to  the headset manufacturers instructions for information regarding 
compatibility, power source, power adapter or batteries, and special options).
System Check-Out
After completing installation on the DHS  system, it must be intitialized so that default 
data can be loaded. Prior to actual power up and initialization, the DHS  should be 
checked-over to avoid startup delays or improper loading:
1. Make sure that the KSU is properly grounded.
2. Verify that all PCBs are firmly seated onto their connectors.
3. Inspect the MDF for shorted wiring and improper polarity that would affect the 
Digital Key Terminals or DSS consoles.
4. Make sure that the plug-ended MDF cables connected to the KSU are secure and are 
plugged into the correct position.
Power Up Sequence
The power up sequence involves the proper application of AC power to the system. A 
successful power up is assured if the installation procedure has been followed:
1. Plug the AC power cord of the KSU into the dedicated 117V AC outlet.
2. Locate the database INITIALIZATION switch SW1 on the CPU Module. It is located at 
the bottom edge of the CPU Module oriented in the center. It is also labeled ON and 
OFF.
This switch controls connection of the dynamic RAM battery circuit. When switched 
OFF, customer volatile database programming is not protected by the memory 
battery in the event power is lost. In normal operation this switch will be ON at all 
times.
3. To load default at this time, turn KSU power OFF.
4. Operate the INITIALIZATION (SW1) to the OFF (left) position.
5. Allow the system and switch to remain in this state for approximately two minutes.
On amplified headsets with self-powered (battery) headset adapters, the key telephone 
MUTE operation may not mute the headset. This is because the key telephone MUTE 
function removes system battery from the microphone at the handset jack. External power 
supplied to the headset will maintain its microphone voltage and allow the user to override 
the key telephone MUTE operation. In this case, the headset adapter MUTE function must 
be used (refer to the headset manufacturers instructions for more details). 
						

							2-54Feature Upgrade Procedure
6. Operate the INITIALIZATION (SW1) to the ON (right) position.
7. Restore system power.
8. Observe the CPU/Power LED. After approximately 4 - 6 sec., the LED should begin to 
flash.
9. If the LED remains unlit or lit without flashing, repeat the above steps from Step 3.
Once the power up sequence is complete, DEFAULT DATA is loaded and the system 
should be fully operational. 
Feature Upgrade Procedure
Use the following procedure to upgrade the DHS system Feature Package software. Once 
the upgrade is complete, the system must be initialized to assure proper operation.
1. Disconnect system power and remove the KSU cover by removing each of the 4 front 
cover screws located at each corner.
2. If an Option Module is installed it must temporarily be removed to gain access to the 
system software EPROM socket (U9).
3. Use the diagram (refer to Figure 2-29: DHS Components) and locate the system 
software EPROM socket U9. Observe the orientation of the notch at one end of the 
EPROM so that the new EPROM is installed with the same orientation.
4. Using an IC extractor tool, remove the DHS software EPROM from the U9 socket.
5. Carefully remove the new software EPROM from its packing material and inspect for 
damage (if any damage is noticeable please contact Vodavi Customer Service).
6. Install the new EPROM into the vacated U9 socket with extreme care so that no 
EPROM pins are bent when inserted. The EPROM MUST be inserted such that the 
notch is oriented at the top of the chip when in place (same orientation as the 
previously removed chip).
7. Replace the Option Module if removed in Step 2.
8. Following proper power up and initialization, the system should function properly 
with the new Feature Package software features operational. All specific customer 
database data must be re-entered to customize system operation for use.
Refer to Chapter 7, Maintenance/ Troubleshooting, for further assistance if power up 
cannot be activated.
Any handling of system integrated circuits must be done in a static controlled environment. 
Please use satisfactory static preventive practices while handling system components and 
while working on the system KSU with cover removed. (USE A STATIC WRIST STRAP!) 
						

							Feature Upgrade Procedure2-55
Figure 2-29: DHS Components 
SW1 must remain in the ON position following initialization to engage customer database 
RAM memory backup in the event of commercial/utility power outage. RAM backup battery 
charging occurs only when SW1 is in the ON position. The RAM battery requires 14 hr min. 
normal (powered) system operation for adequate charging.
AC Power
Transformer
117/230V AC
Option Module
ConnectorStandard MOH
BGM Module
1/8 in. Phono Jack
for MOH/BGM
CPU Module 3 x 8 Module
AC Fuse
Power Switch
Power Heartbeat LED
Initialization
Switch SW1
25 Pair Champ
Connector
Cable Clamp
Tie-down Posts
DC Fuse
Spare
Fuses (2)
System
Software
Eprom
Socket U9
Power ConnectorBus Connectors
JP2, JP3, and JP4 
						

							2-56Feature Upgrade Procedure 
						

							3
DHS-E Description
and Installation
The STARPLUS® DHS-E™ Digital Hybrid System is a full-featured digital key
telephone system. The common system architecture supports three digital key
telephone models (refer to 
Chapter 2, DHS Description and Installation, Digital Key
Te l e p h o n e s
) a Direct Station Selector (DSS), and an expandable analog adaptor
interface. The 
DHS-E is designed to meet the telecommunications needs of small to
medium sized business offices.