TOA Electronics N-8000AF IP Intercom Audio Function Interface Unit

The TOA N-8000AF IP Intercom Audio Function Interface Unit offers multiple functions within the N-8000 system, serving as an analog audio input/output bridge, a bell schedule generator with internal tones, and a recording device for archival purposes. Additionally, it can operate as the system master clock, syncing with contact closure or NTP server as needed. When utilized as an analog audio bridge, it accepts mic or line level input and can broadcast to any paging zone or station, providing one line-level output along with eight contact closure inputs and outputs that can be synchronized with paging events.

As a bell schedule generator, the N-8000AF supports 16 schedules with 64 events each, offering five internal tones and the ability to trigger up to four external paging sources. For recording purposes, it supplies an analog audio output and contact closure control for external recording devices to capture pages, announcements, and conversations. Please note that a rack mount kit is not included, and the recommended options are TOA MB-15B-BK (one unit per rack space) or MB-15B-J (two units per rack space) for installation.

Key Features

• N-8000CO serves as a C/O interface unit for TOA's packet intercom system
  
• Utilizes packet audio technology for communication
  
• Features an analog central office line circuit for making and receiving calls
  
• Allows paging calls through analog subscriber lines when connected to LAN
  
• Enables control of equipment connected to N-8000MI and N-8000DI
  
• Can be mounted in an EIA equipment rack (1U size) with optional rack mounting bracket
  
• Alternatively, can be installed on a wall using optional wall mounting bracket
  
• Rack mount kit not included, use TOA MB-15B-BK (1 unit per rack space) or MB-15B-J (2 units per rack space)
  
• Equipped with 10/100BaseTX Ethernet network connection
  
• Offers one MIC/LINE audio line input, one audio line output, eight contact inputs, time synchronization input, built-in timer, and chime.

Technical Specifications

Power Source
120 V AC, 50/60 Hz
Power Consumption
7 W (max.)
Audio Input
1 input (transformer isolated), -58 dB* to 0 dB*, 2 kΩ, balanced
(MIC/LINE input, controllable on the software)
with input volume control knob, removable terminal block (3 pins)
Audio Output
1 output (transformer isolated), 0 dB*, 600 Ω, balanced, removable terminal block (3 pins)
Contact Input
8 inputs, no-voltage make contact input, open voltage: 24 V DC,
short-circuit current: 5 mA or less, removable terminal block (10 pins),
(1 common terminal for 4 inputs)
Contact Output
8 outputs, relay contact output, contact capacity: 24 V DC/2 - 500 mA,
removable terminal block (16 pins)
Time Sync Input
1 input, no-voltage make contact input, open voltage: 24 V DC,
short-circuit current
5 mA or less, removable terminal block (2 pins)
Network Section
Network I/F
10BASE-T/100BASE-TX (Automatic-Negotiation)
Network protocol
TCP/IP, UDP, HTTP, RTP, ARP, ICMP, IGMP
Audio packet transmission system
Unicast, Multicast
Number of paging destinations
Unicast (max. 8), Multicast (max. 191)
Connector
RJ45 connector
Voice sampling frequency
16 kHz, 8 kHz (controllable on the software)
Quantifying bit number
16-bit
Voice encoding method
Sub-band ADPCM, Cryptosystem
Voice packet loss recovery
Silence insertion
Audio delay time
80 ms, 320 ms (controllable on the software)
Indication
Network LNK/ACT indication, Status lamp, Power-on indication lamp, Signal lamp, Peak lamp
Other
Firmware update function, System data hold function, Time of day hold facility,
Reset switch (front panel)
Setting Method
Rack, Desk, Surface mount
Operating Temperature
0 Degrees C to +40 Degrees C (32 Degrees F to 104 Degrees F)
Operating Humidity
90 %RH or less (no condensation)
Finish
pre-coated steel plate, black, 30 % gloss
Dimensions
210 (W) x 44.3 (H) x 267 (D) mm (8.27” x 1.74” x 10.51”)
Weight
1.7 kg (3.75 lb)
Accessory
Power cord (2 m (6.56 ft)) …1, CD (for PC setting, maintenance use) …1,
Removable terminal plug (2 pins) …1, Removable terminal plug (3 pins) …2,
Removable terminal plug (5 pins) …2, Removable terminal plug (8 pins) …2,
Plastic foot…4, Screw for fitting plastic foot …4
Option
Rack mounting bracket: MB-15B-BK (for rack mounting one N-8000AF unit)
MB-15B-J (for rack mounting two N-8000AF units)
Wall mounting bracket: YC-850