Otto Multi-Port Hub PTT User manual

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Multi-Port Hub PTT
Technical Manual and Instructions for Use

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Multi-Port Hub PTT Introduction
The Multi-Port Hub PTT (Push-to-Talk) allows operation of
the NoizeBarrier®TAC headset with up to three radios or
other communication devices. In addition to providing
PTT buttons for two-way radio communications, for a wide
range of OTTO manufactured headsets, the Multi-Port
Hub controls levels of situational awareness (talk-through)
within the NoizeBarrier TAC headset only.
Features of the Multi-Port Hub PTT
• 3 separate PTT buttons
• Left hand, right hand reversible
• Up/Down volume, On/Off control buttons for
situational awareness (feature is only available with
NoizeBarrier TAC; +/- 12dB)
• Single/Dual/Triple communications (comm)
modularity
• MOLLE (Modular Lightweight Load-carrying
Equipment) attachment system included
• Small, lightweight form factor
• Compatible with all major radio platforms
• Optional compatibility with both Android and most
other 3.5 MM jack devices
• Detachable cables for each radio/device
• No batteries required

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Multi-Port Hub PTT
Figures 1 & 2
a) MOLLE Clip Interface
b) Headset jack
c) Main jack – PTT 1-2
d) AUX jack – PTT 3
e) PTT 1
f) PTT 2
g) PTT 3
h) Volume up
i) Volume down
Figure 1Figure 1 Figure 2Figure 2
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Radio Cables
OTTO has cables for a wide variety of radios, intercoms,
headsets, and other accessories to interface with the Hub.
Please email [email protected] for more details.
PTT and Volume Buttons
The Multi-Port Hub PTT has three buttons
marked 1, 2, and 3 on the side of the hub.
It also has volume + and – buttons to control
situational awareness (talk-through).
1. The top PTT button marked 1is the
primary PTT button. It controls the
radio plugged into the jack labeled
PTT 1-2 MAIN.
2. The middle PTT button marked 2is for
secondary radios plugged into the MAIN jack with
a Y-cable, or for dual comms channels on a dual-
channel radio platform.
3. The bottom PTT marked 3is used when a radio or device
is plugged into the AUX jack.
4. Operating the volume + and
-buttons on the Hub work the
same as the NoizeBarrier TAC
headset. A long depression
turns the situational awareness
feature on or off. A short
depression on either button will
turn the volume up or down.
volume –volume –
volume +volume +

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Multi-Port Hub PTT Operation
When a single radio is used,
receive audio will be heard in
both ears of the NoizeBarrier TAC
(only) headset. When two radios
are used, primary radio comms
(generally from the MAIN jack and using PTT 1) will be
heard in the left ear; secondary audio (on PTT 2 or 3) will
be heard in the right ear. If three radios are in use, the third
radio plugged into AUX will be heard in both ears.
Installation
Note that the connectors on the Multi-
Port Hub PTT are keyed to create proper
alignment of the connector pins.
1. Plug the audio connector cable on
the NoizeBarrier TAC headset into
the jack marked HDST on the top
of the hub.
2. Plug a radio connector cable (see page 4) into
the bottom of the hub. The cable must be the
appropriate cable for the radio platform in use. For
use with one radio, plug the connector into
the jack on the hub marked PTT 1-2 MAIN.
3. Plug the other end of the radio cable into the
radio or device.
4. If more than one radio is used, the MAIN jack is
for the primary radio. With the use of a Y-cable the
MAIN jack is for primary and secondary comms.

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5. An additional radio, cellphone, or EUD (End User
Device) can be plugged into the AUX jack and is
controlled by PTT 3.
6. Using the Y-cable on the MAIN jack and an
additional radio cable on the AUX jack, up to three
radios can be connected to the hub.
Radio Operations
The NoizeBarrier TAC headset can be used for radio
communications regardless of whether active talk-through
is powered.
Single Radio Operation
1. Plug the connector on the headset cable into the top
of the Multi-Port Hub PTT.
2. Attach a radio cable to the MAIN connector on the
bottom of the hub. Cables are specic to the radio
model in use.
3. Attach the cable to the connector on the radio.
4. Turn on the radio.
5. Listening volume for radio communications is
controlled by the volume controls on the radio.
6. Situational awareness volume is controlled by the
+ and - buttons on the left ear cup or the + and -
buttons on the hub.
7. PTT feature is activated when the PTT button marked
1on the side of the hub is pressed. (1and 2on dual-
PTT radios)

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Multiple Radio Operation
1. Plug the connector on the NoizeBarrier TAC headset
cable into the top of the Multi-Port Hub PTT.
2. Attach radio cables to the MAIN or AUX connectors
on the bottom of the hub.
a. To use both channels on the dual channel radio
attach the cable to the MAIN jack on the Multi-
Port Hub
b. To use three single channel radios, split cables
are used to attach two radios to the MAIN jack
on the hub. A third radio will attach to the AUX
connector on the hub. Cables are specic to the
radio model in use.
3. Attach the cables to the connectors on the radios.
4. Turn on the radios.
5. Listening volume for radio communications are
controlled by the volume controls on the radios.
6. Situational awareness volume is controlled by the
+ and - buttons on the left ear cup or the + and -
buttons on the hub.
7. PTT feature is activated when the PTT button marked
1on the side of the hub is pressed.
a. Dual-PTT radios will use PTT 1and 2. Receive
audio will be heard separately in the left and right
ears (if radio is capable).
b. Radios or accessories connected to the AUX jack
will use PTT 3 when feature is enabled.

Warranty and Support
The Multi-Port Hub PTT includes a one year warranty from
the date of purchase.
Product Registration
Register to receive email alerts whenever updates or
mission critical information regarding your product becomes
available. https://go.otto-comm.com/product-registration
10 West Main Street
Carpentersville, IL U.S.A. 60110
Toll Free Phone: 888-234-OTTO (6886)
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
www.otto-comm.com
For questions or more information, please contact:
This product can expose you to chemicals including lead, which is known
to the State of California to cause cancer & other reproductive harm.
For more information go to www.P65Warnings.ca.gov
07/2020
To view the Multi-Port Hub
manual please visit
https://otto-comm.com/manuals