MultiCellink ISDN

MultiCellink is a multichannel GSM gateway. Digital technology allows to get excellent quality of the connections, and a wide range of functionality. MultiCellink allows flexible adjustment of the number of GSM channels to the level of traffic generated by the expandable gateway for further expansion modules.

More information

Basic information

Modular system

  • Gateway configuration in basic version: 2 GSM lines (2 SIM cards) with 1 ISDN NT/TE port
  • Extension to 4, 6 or 8 GSM lines (4, 6 or 8 SIM cards) with 2, 3 or 4 ISDN NT/TE lines in the same unit
  • One and the same housing regardless of configuration
  • 1 antenna connector for 2, 4, 6 or 8 GSM lines (build-in antenna combiner included)
  • 1 power supply for the complete concept

ISDN configuration

  • ISDN S0 port configured as NT - emulates the city line - connection of the gateway to the PABX city line port
  • ISDN S0 port configured as TE - emulates terminal termination - connection under the internal contact S0 of the PABX
  • Operation in mode "Point-to-Point" or "Point-Multipoint"
  • Depending on the version, the gateway is available with 1, 2, 3 or 4 ISDN ports (2 GSM channels for each ISDN port)
  • Possibility of parallel use of two ISDN ports for LCR function - one ISDN port in TE mode connected to the PSTN network, second port in NT mode connected to the PABX control panel (optional)

Basic MultiCellink ISDN versions depending on the number of GSM lines

Item Version
9820.10990_2 2 GSM lines, 1 port ISDN BRI NT/TE
9820.10990_4 4 GSM lines, 2 ports ISDN BRI NT/TE
9820.10990_6 6 GSM lines, 3 ports ISDN BRI NT/TE
9820.10990_8 8 GSM lines, 4 ports ISDN BRI NT/TE


Standard features

Basic functions

  • PIN code management
  • Network operator SIM lock system - individual for each GSM line
  • Adjusting the sound level in the transmission and reception
  • Modem SMS, receive and transmitt SMS via RS232 port

Functions for incoming traffic

  • Caller number identification
  • Direct dialling of an internal number using DTMF tones
  • Incoming calls routing to the relevant DDI number based on history of outgoing calls

Functions for outgoing traffic

  • Defining the direction prohibited
  • Inteligent Quick Dial System
  • Hiding outgoing number presentation
  • Equal distribution of traffic for available GSM channels - "Trafic share" function
  • Notification of an attempted call by SMS if the subscriber did not answer the call or had a busy line
  • SIM card management, controlling the use of the minutes package of individual SIM cards - "Talk time" function

Service functions

    • Local programming gateway from a PC via RS232 communication port
    • Remote access to the gateway using GSM data transmission
    • Remote and  local reading the last 1500 events recorded on the gateway
    • Connection test for directions: gateway->GSM and gateway->ISDN
    • Reading call statistics for each GSM channel
    • Reading the statistics of the SMS messages sent for each GSM channel
    • Possibility of remote or local monitoring of gateway operation in real time


Housing and connectors description

General parameters

Description Specification
Dimensions 227 x 195 x 68 mm (H x W x D)
Mounting hole spacing
133 mm
Weight 1600 g (excl. power supply)
Material Aluminium
Application Inside the building

Wymiary obudowy bramki MultiCellink


Environmental specification

Description Specification
Operation temperature
-15 oC - +60 oC
Storag temperature
25 oC - +85 oC
Relative humidity
Max. 85% non condensing

Opis wyprowadzeń bramki MultiCellink

Connectors description

Connector Description
1 Plug ISDN 3 - TE mode
Plug ISDN 3 - NT mode
Plug ISDN 4 - NT mode
Plug ISDN 1 - TE mode
Plug ISDN 1 - NT mode
Plug ISDN 2 - NT mode
Plug RS232. Programming gateway, send/receive SMS
4 inputs/outputs combination - optional
Power plug. Place to connect power supply
Technical specification

Technical specification

Description Specification
Input voltage 12,8 VDC (12 - 20 VDC)
Maximum current consumption 1,5 A @ 12,8 VDC
Power consumption
Current consumption at a supply voltage of
13,5 VDC:
in standby mode - 80 mA
in off hook mode - 1 channel - 220 mA
in off hook mode - 2 channels- 360 mA
in off hook mode - 8 channels - 1200 mA

ISDN interface parameters

Description Specification
Compliance with standards TBR3 / TBR3A1 - CTR3 The tests were carried out in Germany; European Standard DSS1; BRI Basic Rate Interface, 1*D+2*B channels.;
Programmable protocol Point-to-Point","Point-to-Multipoint"; Built-in own synchronization system; B channels monitoring with active LCR function.

Type of ISDN connector
RJ45 standard - S0 interface
ISDN line power is available as an option.
1*NT ISDN BRI; 1*TE ISDN BRI contact S0 (basic version: 2 simultaneous connections)
Ports in full version
4*NT ISDN BRI; 2*TE ISDN BRI (full version: 8 simultaneous connections)

Mobile interface specification

Description Specification
Technology Dual band: GSM 900/1800 MHz; Cinterion GSM Phase 2+
Class 4 (output power 2W) for 900 MHz
Class 2 (output power 1W) for 1800 MHz
Gateway basic version
Two channels GSM (2 SIM cards)
Build-in antenna combiner - 1 antenna connector
Antenna combiner
One TNC connector with up to eight GSM channels (8 SIM cards)
Loss of signal: approximately 3.5 dB for 2 channels, 11.8 dB for 8 GSM channels.


* Depending on the type of gateway and used GSM module parameters may differ from those listed in the specification.


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