Specifications Overview
DuraFon PRO Expansion Base

DuraFon PRO-BU

Base Unit for DuraFon PRO Systems

Physical Interface

PRO-BU Base Unit

Buttons
Reset
Registration

Jack(s)
Line x4
Audio-In x 1 (3.5 mm)
DC x 1

LED Indicators
Power
In-Use
Electrical Specifications

PRO-BU Base Unit

Frequency
902-928MHz

RF Power
Peak: 708mW; Average: 304mW

Channel Spacing
200 kHz

Number of Channels
128

Modulation
GMSK

Multiple Access
Frequency Hopping TDMA

Frequency Hopping Rate
100 per second

TDMA Frame Length
10 ms

Number of Talk Paths
4

Receiver Sensitivity
< -108 dBm (@ BER 10-2)

Antenna Connector
Reverse TNC

Antenna Gain
2 dBi (included)
5 dBi External (optional)

TX Power Control Range
N/A

Telephone Interface
RJ11 x 4

VoIP Interface
N/A

Default IP Address
N/A

Default User Name & Pswd
N/A

SIP Protocol
N/A

Speech Coding
8 kbps G.729A

Channel Coding
8 kbps Convolutional + CRC

Transmission Data Rate
170.678 kbps

User Data Rate
128 kbps duplex

Duplex
Time Division Duplex (TDD)

Voice Quality
TIA/EIA-470B

Number of System IDs
65,536

Ring Signal
20-50 Hz, 12-90 Vrms

Auto-Attendant Coding
8 kbps G.729

Flash Time
100-900 ms Programmable

Power Source
120V/7V AC/DC Adapter

Charge Time
N/A

Charge Current
N/A

Battery Talk & Standby Time
N/A

Environmental Specifications

PRO-BU Base Unit

Regulation Compliance
FCC Part 15, Part 68

Operating Temperature
14 – 140°F (-10 – 60°C)

Storage Temperature
14 – 158°F (-10 – 70°C)

Humidity
20 – 75 %

IP Rating
N/A

Dimensions
11.0" x 2.1" x 8.5" (215 x 53 x 280 mm)

Device Weight
2 lbs. (907g)

Product Highlights

The EnGenius DuraFon PRO-BU is the expansion base that enables connection of an additional four (4) lines/ports to an existing DuraFon PRO installation. Also use the DuraFon PRO-BU for “Extended Range” options that are available with the DuraFon PRO product line.
  • Multi-Line Functionality
  • Supports up to 90 DuraFon PRO or DuraWalkie Handsets
  • Works Behind any Analog Port (PBX, VoIP, PSTN, FXS or POTS)
  • Expandable for Extended User Capacity