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Four square conference phones with keypads and a small base unit, dark finish

ClearOne

ClearOne 910-158-500-02 MAXAttach conference phone with four wired units

SKU CH-21J8-HG89V MPN 910-158-500-02

A conference phone system with four wired units, a base unit and cables for expanded microphone and loudspeaker coverage

  • TypeMAXAttach Conference Phone
  • Additional FeaturesEcho Cancellation Tail time: 60 ms x 3 Noise Cancellation Dy
  • SpeakerphoneYes
  • PowerBase unit: Auto-adjusting power module; 100-240 VAC; 50/60 H
  • ConnectionsAnalog PBX or PSTN line RJ-11C, -12 dBm nominal
  • DimensionsPhone unit: 10.5" x 10.5" x 3" Base unit: 4.25" x 5.5" x 2.5
  • Four wired phones ensure full room coverage
  • Distributed echo cancellation delivers natural conversations
  • Dynamic noise cancellation removes background interference
  • 90 dB speaker output provides clear audio
  • Analogue PBX or PSTN line connects directly

Conference system with four wired phones

The ClearOne MAXAttach 910-158-500-02 includes four wired conference phones and one base unit with connecting cables. It is designed for meeting rooms that require even microphone and loudspeaker distribution across a larger seating area. The system provides centralized access to dialing, mute and volume controls from the phone units.

Distributed echo cancellation with 60 ms tail time

The system uses Distributed Echo Cancellation with a tail time of 60 ms x 3 and dynamic noise cancellation to maintain clarity during extended conferences. Audio processing typically found in high-end installed systems handles sustained conversation without degradation. The loudspeaker delivers 90dBspl A weighted at 1 ft across a 200 Hz to 3.3 kHz bandwidth.

Analog RJ-11C connection for PBX or PSTN

The base unit connects to an analog PBX or PSTN line via an RJ-11C interface at -12 dBm nominal. This single specification determines compatibility with the existing telephony infrastructure. The auto-adjusting power module accepts 100-240 VAC at 50/60 Hz for the base unit.

Highlights

  • Four wired phones ensure full room coverage
  • Distributed echo cancellation delivers natural conversations
  • Dynamic noise cancellation removes background interference
  • 90 dB speaker output provides clear audio
  • Analogue PBX or PSTN line connects directly

Specifications

BrandClearOne
Model910-158-500-02
TypeMAXAttach Conference Phone
Additional FeaturesEcho Cancellation
Tail time: 60 ms x 3
Noise Cancellation
Dynamic noise cancellation
Keypad
Alphanumeric standard keypad
Loudspeaker
Volume: 90dBspl A weighted @ 1 ft
Bandwidth: 200 Hz–3.3 kHz
Record Output
Connector: 2.5 mm mono audio jack
Impedance: <1000 ohms
Bandwidth: 200 Hz–3.3 kHz
Dynamic range: 60 dB
THD <.01%
Certifications
FCC part 15 Class A
FCC part 68
UL Certified
Environmental
Operating temperature: 32–118° F (0–48° C)
Storage temperature: 41–158° F (5–70° C)
Operating humidity: 15 to 80%
Storage humidity: 10 to 90%
SpeakerphoneYes
PowerBase unit:
Auto-adjusting power module;
100-240 VAC; 50/60 Hz
ConnectionsAnalog PBX or PSTN line
RJ-11C, -12 dBm nominal
DimensionsPhone unit: 10.5" x 10.5" x 3"
Base unit: 4.25" x 5.5" x 2.5"
WeightPhone unit: 2.7 lb (1.2 kg)
Base unit: 0.6 lb (0.27 kg)
Shipping weight8.80 kg
Package size490 × 467 × 333 mm

Questions about this item

How much power does the base unit draw when the four conference phones are running all day?

The base unit uses an auto-adjusting power module that accepts 100-240 VAC at 50/60 Hz.

What existing line connection is required for the MAXAttach system to operate?

An analog PBX or PSTN line with an RJ-11C connector at -12 dBm nominal level is required.

Will the four wired phones work alongside an older analog handset on the same line?

The system connects via a single RJ-11C analog line; parallel analog devices can share the line but audio performance depends on the PBX or PSTN configuration.

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