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Network Intercom Panel

Network Intercom Panel

Secure Speak, Unite Solutions
 Split-type Design
 Cyclic Monitoring
 Built-in 15W Speaker
 2-way communication
 Automatic Audio Inspection

The NAS-8521 IP Split-Type Intercom Controller is designed for secure communication in bank scenarios, particularly for ATM machines. Its unique split-type design enhances network cable security and local network protection. With easy configuration via a user-friendly web interface, it supports up to 8 split-type intercom panels through daisy-chain connections. The integrated network audio encoder/decoder acts as a bridge to IP audio intercom master stations. Equipped with a 2×10 watt class-D digital amplifier, it works seamlessly with SPON® XC-9000 audio management software for versatile functionality.

Intercomm Controller Specifications
Specification Details
Power Supply DC 12V/2A
Power Consumption ≤23W
Network Protocol FTP, HTTP, TCP/IP, UDP, ARP, ICMP, IGMP
Audio Sampling Rate 8kHz-44.1kHz, 16bit
Transmission Bit Rate 8kbps-320kbps
S/N Ratio ≥85dB
Frequency Response 20Hz-16kHz
Interface 1×RJ45 Ethernet Port
1×SD Card Slot
2×Relay Input
2×Relay Output
1×Line Output (1/8” TS Jack)
1×Record Output (1/8” TS Jack)
1×Intercom Panel Output
2×Speaker Output (8Ω)
1×Power Input
Dimensions 210×155×44.5mm
Weight 0.5kg
Standard Accessories 2×8-Pin Terminal Block Connector
1×Installation Manual
Optional Accessories DC 12V/2A Power Adapter (US/EU/UK/AU)


Intercom Panel Specifications
Model No. NAS-8521D NAS-8521E
Interface 1×Intercom Panel Input, 1×Intercom Panel Output
IP Rating IP54
Dimensions 150×62×31mm 155×67×30mm
Weight 0.3kg
Standard Accessories 1×Customer Operational Guideline, 1×Installation Manual
Is there a function to reduce Noise Elimination?
 The IP paging mic is built with the Noise reduction algorithm.
Can it work in cases where the server has network problems?
The IP paging mic supports offline calling without server software.
Support recording all incoming and outgoing call information. Including calls that have missed calls?
Yes, it supports
What should I do if other SPON® IP audio devices cannot be identified by the built-in web server of SPON® IP paging console?
  • Please check if the communication protocol of other SPON® IP audio devices has been set to NAS protocol, since the built-in web server can only identify other devices via NAS protocol.

Which Audio Formats are supported by SPON IP public address system? How much bandwidth is used?
  • The audio formats of IP Public Address are: MP2, MP3, AAC, etc. (MP2 and AAC are the standard designated audio formats of national DAB )

  • Compare of used Bandwidth: MP2: 256K-512K MP3: 64K-128K

Practical features of the IP PA system when applied to highways?
  • Background Music and Announcements: The system can play music, Emergency Broadcasting.

  • Situation Reports: It can announce daily activity schedules, provide key points about significant events, and give updates about essential convoys passing through.

  • Emergency Interjections: The system can be used to urgently intercept vehicles violating rules, grant access to special vehicles, and command on-site order during chaotic situations.

  • Emergency Paging: If a toll booth encounters an unexpected situation, operators can use a one-touch emergency call to the control center or neighboring toll stations for immediate assistance.

Where can digital IP public address systems be applied?
  • Schools, especially those equipped with campus networks.

  • Highway Toll Stations

  • Chain Supermarkets

  • Large Enterprise.

  • Office Buildings and Skyscrapers.

  • Rural Connectivity Projects.

  • Any location with network connectivity can benefit from the IP public address system.

How does SPON's IP public address system set itself apart from traditional PA systems?
  • High Audio Quality: The system offers pristine fidelity through its full digitalization, utilizing CD-like quality data file formats, which are perfectly consistent with computer output.

  • Personalization: Built on an Internet protocol, each audio endpoint can freely choose any channel for playback, with adjustable progress, allowing for point-to-point personalized programming.

  • Network Integration: From teachers' courseware production and arrangement to speeches and scheduled program broadcasts, everything can be operated remotely over the network.

  • Remote Functionality: The system supports remote broadcasting across different cities and even countries. As long as there's an internet connection, broadcasting can be initiated.