videosurveillance systems

Jiading District, Shanghai, China.  Bo Yuan Rd., No1333, Room1618  (Post code 201800)
Tel: 021-60192179, FAX : 021-60192180
Hotline: 4000 2131 33
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Feature: 2 порта с независимыми настройками
Application 1: Для организации передачи аналоговых интерфейсов FXO с использованием технологии VoIP

Submodule SMR-17VO is designed to be installed on MR-17V module-motherboard, which is a part of the SG-17R universal multiservice platform; is used for setting up FXO interface to link up telephone lines form PBXs.

Technical characteristics

  • SMR-17VO general characteristics:
    • Number of FXO channels on one submodule: 2
    • Connector type: RJ-11
    • Battery voltage, V: 30 – 72
    • Call voltage amplitude, V: 30 – 120
    • Call signal frequency, Hz: 15 - 65
    • Two-wire termination impedance, Ω: 600
  • System interface parameters
    • Electrical joint type: 40+10 contacts, proprietary
    • Max number of submodules installed on one MR-17V motherboard: 4
  • Operation mode:
    • Data multiplexing – TDM: available
    • Data routing: available
    • Max number of submodules installed on one SG-17R*: 16
  • Codecs:
    • High quality: G711 (A-law)
    • High speed: G729
    • Full VoIP codec stack support option
  • Other characteristics
    • Module size (with the lath):
      • Height, mm: 9
      • Width, mm: 32
      • Depth, mm: 98
    • Weight, g: 15
    • Power consumption, W: 0,6
  • Service conditions
    • On the SG-17R tub together with MR-17V module
    • Air temperature: 10 – 40 °С
    • Relative air humidity: up to 85%
    • Air pressure: 84 – 107 кПа



    Submodule SMR-17VO features 2 FXO interfaces (foreign exchange office) for linking up subscriber lines from PBXs. 
    Interface of this type provides the following services:
    • answer signal
    • dialing
    • disconnect signal
    Submodule SMR-17VO transmits data using IP-technology. The equipment transforms analog data into digital and forms packets to be sent over IP-network, which provides the following options, when used within SG-17R base platform:
    • Using existing IP-networks for data transmission
    • Setting up multipurpose traffic within the chosen data channel
    • Managing traffic within the chosen transmission channel, both using QoS and dedicating a fixed band for IP-traffic
    • Transmitting data through heterogeneous media, like optics, EM waves, satellite signals, which require data routing at junctions
    Transmitting data over various interfaces (Ethernet, SHDSL, E1, RS232) without additional equipment.
    Submodule SMR-17VO may operate installed on the SG-17R base platform, combined with other submodules, namely SMR-17VO (FXO), SMR-17VS (FXS), installed on the same or different MR-17V* module-boards.
    Software for VoIP modules based on SG-17R base platform:
    • Setting up operation modes for VoIP-modules over web-interface
    • Codecs: g711 (aLaw and uLaw) – 64 kbit/s, g723 – 6,4 kbit/s, g729 – 8 kbit/s, g729e, g726 (at 16,24,32 and 40 kbit/s), iLbc (at 13.33 kbit/s)
    • T.38 support (for facsimile messages)
    • Alteration of transmission-frame, codec identificator in the rtp-stream (payload) and the order of bit-packing (aal2 or rtp) for g726.
    • Prioritization of codecs
    • Independent setup for such channel characteristics as: dtmf transmission type (in-band, out-of-band (rfc2833), both or none), payload when using rfc 2833, volume when signal coding/decoding, activity sensor (VAD), HPF (high-pass filter)
    • Determining sip-uri and the registration server for linkup to a remote sip-address during operation time (the coming calls will be redirected to the chosen FXS channel)
    • “Hotline” option (for FXS channel it means that the call we directed to the chosen address the second the telephone handset is lifted; for FXO channel it will mean redirecting the call from PBX)
    • Telephone book


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