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Table of Contents
1. General Information
2. Safety Instructions
3. Features
4. Inserting Batteries/Empty Batteries
5. Controls
6. Connecting the Headset Switch
7. The Telephone Receiver Switch - Headset
8. The Adjustment Switch
9. The “ON/Auto” Switch
10. The MUTE Button
11. Connecting a Power Pack
12. General Notes
13. Troubleshooting
14. Notes/Settings
1. General Information
The headset switch HA-2710 enables you to connect a headset to all common corded telephones.
The HA-2710 has several adjustment switches for adjusting the headset switch to the telephone and
the headset switch to the headset. No adjustments are required between the headset switch and
the headset when using the headset provided (two 3.5mm universal jack plugs). Only the sound level
is adjusted.
Please remove empty batteries immediately!
Make sure to read about all the headset switch functions before connecting it.
Install the DECT cordless telephone at least 1 meter away to avoid electrical noise.
2. Safety Instructions
The headset switch is only intended for use in dry rooms. Only use it as described in this manual.
The headset switch HA-2710 may only be used with approved telephones! (Germany: BZT, R&TTE,
FTZ, CE, LVD Low-Voltage Directive)
Only use power packs approved by Hama!
Do not open and/or make changes to the headset switch. The headset switch does not contain any
parts that need servicing.
Remove the cable to change the battery! Never use without the battery compartment cover!
Do not use the headset switch if the cable or casing is damaged or if liquid enters the headset.
Contact Hama service for all other errors.
Please remove empty batteries immediately!
3. Features
The headset switch HA-2710 has the following features:
- Switches between telephone, telephone receiver and headset
- Adjustment switch for all common headsets and telephones
- Built-in amplifier
- Powered by battery or power pack
- Easy-to-use switch from receiver to headset
- Adjustable microphone gain
- Adjustable receiver volume
- Mute switch with flashing LED
- Auto on mode with LED
- Continuous operation possible
- RJ-9 and two 3.5mm plug jacks for the headset
- Extreme interference resistance against high-frequency irradiation for example,
by DECT or Bluetooth
- Long battery service life
- “RJ-9” connecting cable to telephone provided
- Bracket against unintentional rotation of the MIC control##
- Size: approx. 92 x 35 x 120 [mm] W x H x D not including cable
4. Inserting Batteries/Empty Batteries
To insert the batteries, first remove the cable from the headset switch.
Open the battery compartment by pressing the bracket of the battery compartment cover on the
underside towards the cover. Insert 2 alkaline “AA” batteries according to the image on the battery
compartment cover and close the battery compartment. You should hear the bracket lock into place.
Please remove empty batteries immediately! Damages resulting from expired batteries are not
covered by the warrantee. Dispose of old batteries according to regulations.
A fading LED and limited speech quality indicate weak or empty batteries. Replace the batteries.
5. Controls
Top:
L User manual
Mute button
(Micro OFF)
with LED
Microfon-
Controler
Telephone receiver/
headset switch
Headphone Volume
Control
5
00040696bda 04.12.2009 9:48 Uhr Seite 5
Bottom:
6. Connecting the Headset Switch
Please insert high-quality alkaline batteries before beginning. See the chapter inserting batteries.
To adjust the HA-2710 to the telephone, first ensure normal receiver mode using the HA-2710. Insert
the spiral cable of the receiver in the jack with the receiver symbol (the centre of the three RJ-9
jacks on the back).
Connect the headset switch to the receiver jack of the telephone using the RJ-9 cable provided.
Use the jack with the telephone symbol.
The switch on the top must be pushed to the left position (receiver symbol) for receiver mode.
Simply make a telephone call to ensure it functions properly.
During receiver operation, the signal is simply connected.## The control settings remain disregarded.
Install the DECT cordless telephone at least 1 meter away to avoid electrical noise.
Adjusting to the Telephone:
Connect the Hama headset provided to the 3.5 jack plug on the back of the HA-2710. Both the micro-
phone and earpiece cable have a small symbol on the plug. Please note them when connecting!
Then press the switch on the back from the receiver position to the headset position.
Rotate the reception volume (right top control) to about the middle setting, set the MIC control
(left lower control) to the lower third.##
Push the “On/Auto” switch on the back to the “Auto” position. If the MIC is adjusted correctly, the
HA-2710 switches on automatically. The correct adjustment is achieved by gradually switching both
of the left “Telephone” adjustment switches on the back as follows:
Set the adjustment switch with the “Telephone” symbol step-by-step from level 1 to 7 and at each
position push the adjacent “Pol” switch back and forth between “A” and “B”.
When the MIC connection of the telephone is adjusted correctly, the LED in the MUTE key lights up
(when the MUTE function is activated, the LED blinks).
(Whistling noise may be present during the adjustment process)
Several suitable MIC settings may have been found.##
For this reason, select the suitable receiver position (1 to 7) by performing a hearing test with a per-
son on the phone. Please carefully turn each MIC and headset volume control to evaluate each
adjustment setting accordingly. This process takes a few minutes even for experienced users.
Now you can adjust the headset using the RJ-9 connection. Proceed exactly as when performing the
adjustment on the telephone and if necessary, disconnect the headset from the 3.5mm jack. Do not
move the “Telephone” adjustment switch. Push the 7 step “Headset” adjustment switch on the back
step-by-step from 1 to 7 and at each step, move the “Pol” switch from A to B while you perform the
hearing test with the person on the phone. (Whistling noise may be present during the adjustment
process)
Note: MICs with reverse polarity usually function, however, are considerably too quiet or distorted.
Please carefully check the speech quality, ideally with someone who is familiar with your voice.
This process takes a few minutes even for experienced users.
7. The Telephone Receiver Switch - Headset
Use this control to switch between the telephone receiver and the headset. The amplifier is deacti-
vated completely in the telephone receiver position.
8. The Adjustment Switch
“Telephone” adjustment switch: For adjusting the connection assignment of the telephone receiver
jack For adjusting the headset connection assignment
Telephone Receiver-
Connection
Telephone-
connection RJ-9
Telephone Receiver-
Connection RJ-9
Headset-
connection RJ-9
Headphone 3,5 mm
MIC INPUT 3,5 mm
Switch
“On/Auto-On”
Adjustment switch
Telephone
Battery cabinet
Adjustment switch
Headset
6
00040696bda 04.12.2009 9:48 Uhr Seite 6
9. The “ON/Auto” Switch
In most cases, the AUTO position is recommended. The headset switch is automatically switched on,
when the telephone is on or the receiver is lifted.
The red LED in the MUTE key lights up or blinks for verification.
In rare cases, your telephone may only function with the headset switch in the ON position.
10. The MUTE Button
You can deactivate the microphone with the MUTE button. The LED flashes for verification. The
microphone of the normal telephone receiver is unaffected.
11. Connecting a Power Pack
Please ONLY connect using power packs approved by Hama!
Please observe that due to different systems, minimal electrical noise may occur when operating
with a power pack. Use batteries in such cases. The headset switch is extremely energy-saving.
Please observe the correct polarity and voltage setting on the power pack!
Currently approved power pack: Hama item number: 46594
12. General Notes
The headset switch complies with R&TTE Directives and is CE-certified. A warranty is provided as
required by law. The headset switch must not be opened, modified or damaged by mechanical
means. The headset switch may only be used for the purpose described here.
Please read this manual carefully. Contact our technical service for support.
13. Troubleshooting
Problem: I cannot hear anything in the telephone receiver
Solution: Check the settings and that the cable is routed correctly. Is the switch on the top
switched to “telephone receiver”?
Problem: I cannot hear anything in the headphone/headset
Solution: Check the settings and that the cable is routed correctly. Is the switch on the top
switched to “Headset”?
Is the red LED illuminated? Check the batteries.
Was the adjustment switch accidentally adjusted incorrectly?
Problem: The person on the phone can only slightly hear me or my voice is distorted
Solution: The MIC may be polarized incorrectly. Push the “Headset” POL A/B adjustment
switch to the other position.
14. Notes/Settings
Record your settings here
Note: The positions 1 and 7 are common settings on the “Telephone” adjustment switch
© Böhm-Elektronik 2004
Errors excepted; subject to changes
7
Switch
“On/Auto-On”
Battery cabinet
Adjustment switch
Telephone
1 A
1 B
2 A
2 B
3 A
3 B
4 A
4 B
5 A
5 B
6 A
6 B
7 A
7 B
Adjustment switch
Headset
1 A
1 B
2 A
2 B
3 A
3 B
4 A
4 B
5 A
5 B
6 A
6 B
7 A
7 B
00040696bda 04.12.2009 9:48 Uhr Seite 7
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