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Audio modules that can be used in coal mine broadcasting systems

- Pin Type SIP Protocol Intercom Module.
- Support SIP protocol— SIP v1 (RFC2543), v2 (RFC3261)
- Supports peer-to-peer SIP intercom off the SIP server
  • SIP2701V

  • SINREY

Availability:

IP mine intercom broadcasting system as a whole adopts IP digital network system architecture, the control center is located on the ground in the mining area, consisting of network scope, scheduling microphone host. The underground equipment, on the basis of the traditional two-wire mining telephone, adds the network intercom terminal with network audio transmission function.

SINREY sip2701V intercom audio module add mining intercom function, can be applied to coal mining broadcast intercom system.

Features


- Pin Type SIP Protocol Intercom Module.
- Support SIP protocol— SIP v1 (RFC2543), v2 (RFC3261)
- Supports peer-to-peer SIP intercom off the SIP server

Parameters


Power

  • 4.7-5.5VDC


Audio Formats

  • G.711 a/u,G.721,PCM encodec

  • G.711 a/u,G.722,PCM,mp3 decodec

  • Opus by OEM

  • Supports acoustic echo cancellation

  • MP3 up to 192 kBit fixed & variable bit rates


User / Application Interfaces

  • 3 Push button interface for intercom and paging

  • browser based, serial or Ethernet control API

  • Integrated management system (software/web)



Network Interface

  • 10/100M Base adaptive Ethernet interface

  • DTMF: in-band (RFC2833), out-of-band (SIP_INFO)

  • SIP v1 (RFC2543), v2 (RFC3261), TCP, UDP, RTP, ARP, ICMP, DHCP, DNS, IGMP.


Audio Interfaces

  • Analog stereo out 1.5Vpp, Volume adjustable by application

  • Mic in,frequency range of 70Hz to 12.5KHz

  • Line in,typical amplitude 2000mVpp


Other

  • 52mm×40mm×15mm

  • Operating temperature range -40~85℃

  • Storage temperature range -40~85℃






Downloads


SIP2701V Network Audio Module Specification


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