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Symetrix THI-101 Telephone Headset Interface

B&H # SYTHI101 Mfr # THI-101
Usually ships in 3-7 business days

Availability Details


This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 3-7 business days (subject to availability). Your order will be charged at time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $259.00

The Symetrix THI-101 Telephone Headset Interface delivers telephone audio to a Symetrix conferencing system. You can connect the phone’s headset jack with the THI-101 using the included cable. An RJ-22 jack is provided for connection to headset connector of VoIP / Digital phone. Then connect the balanced audio I / O to the Symetrix DSP and use the phone for dialing and answering calls for your teleconferencing system. The telephone audio can be processed and routed by the Symetrix DSP and all signal processing functions shall be controllable via the Symetrix DSP software. The device provides 1 balanced line input and 1 line level output. Audio inputs and outputs can be accessed via rear panel 0.15” (3.81mm) terminal block connectors. This is an RoHS compliant device and it works with any phone by connecting to the headset connection whether the phone line is POTS or VOIP.

Easily add audio conferencing to Symetrix DSP systems
Allows use of a telephone for dialing and for answering calls
Features RJ-22 jack for interfacing with headset connector of VoIP / digital phone, such as Avaya, Cisco, and Adtran
1 balanced analog input, 1 balanced analog output for connection to Symetrix DSP
Crossover switch to accommodate various wiring configurations
Audio ground lift switch for noise isolation and custom cabling
Compact form factor designed for discrete surface or under-table mounting
Input / Output
Number of Inputs 1, balanced line level
Connectors 0.15" (3.81 mm) terminal block
Maximum Input Level +10 dBu at 1 K
Number of Outputs 1, balanced line level
Connectors 0.15" (3.81 mm) terminal block
Frequency Response 100 Hz to 20 kHz, +/- 0.5 dB
THD + Noise < -60 dB (unweighted); 200 Hz to 20 kHz at 0 dBu
Headset Connector RJ-22
Audio I/O Line-Level: Transformer isolated, balanced
Space requirements 2.88 x 5.75 x 1.75" (7.24 x 14.61 x 4.44 cm) (W x D x H) 1
Please Note:

Allow at least 1" (convert) additional clearance for front panel connections. Additional depth may be required depending upon your specific wiring and connections.

Certification and Compliance RoHS
Symetrix THI-101 Telephone Headset Interface
  • 24' (7.32m) 4 Conductor 'Crossover' RJ-22 Cable
  • 2 x 0.15" (3.81mm) Terminal Block Connector
  • Limited 3-Year Warranty
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    Usually ships in 7-14 business days i This item is usually Drop Shipped from the MFR/Distributor within 7-14 business days (subject to availability). Your order will be charged at the time of placing the order with the vendor. Item is non-cancelable and non-returnable.
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