Macrotel X1 & X2GSM/POTS – Digital Telephone Hybrid Processor

Product overview

Macrotel X1 and Macrotel X2 are Axel Technology’s Telephone hybrid third generation for a supreme audio quality.Macrotel X1 manages one POTS/PSTN line while Macrotel X2 can operate on two POTS/PSTN lines.Moreover, in every landline it is available a switching “land-to-wireless mode” through one or two optional Quad Band GSM module so to establish telephone connection where wired lines are not foreseen.Macrotel X1 and Macrotel X2’s telephone interface perfectly suits every phone line all over the world. Via software the user sets the country’s operation.


Macrotel X1

Macrotel X2

Macrotel X1 & X2Highlights


  • 1 and 2 line models
  • POTS/PSTN and GSM Quad Band (option)
  • Digital AGC processor with 2 band EQ
  • Echo canceller and noise gate
  • Balanced XLR I/O (mic/line)
  • Auto answer and disconnection
  • Remote control software
  • Clear audio and natural sound
  • 19” 1u rack
  • Remote control from any mixing console
  • Automatic line compensation
  • Send/Receive audio level adjustment
  • Grafical display
  • Direct setting by front panel
  • Internal PSU 90-260 Vac 50/60Hz on VDE connector

Inputs & Outputs

  • 2 Balance analog input on XLR -
  • 2 Balance analog output on XLR
  • RJ11 connector for POTS line connection (n.2 X2, n.1 X1)
  • RJ11 connector for Tel Set connection (n.2 X2, n.1 X1)
  • DB15 – 4 GPI and 4 GPO Programmable.
  • USB Type B for remote connection
  • 2 RS 232 Serial interface on DB9 female connector

Audio Process and SW interface functions

  • Direct managed by SW interface
  • RX and TX Telephone Hybrid level meters
  • IN and OUT Mixer level meters
  • Hook Mode and Drop Mode
  • Hold Function
  • Nominal Output Level settings (from -10 to +14dB at 1 dB step)
  • Conference Function (available only on Macrotel X2).
  • ATT Function with Attenuation parameter
  • Audio Filters (HP and LP)
  • AGC settings (Max Gain and Speed)
  • Input source mode (Line or Mic)
  • Microphone Gain settings (+10 to +40dB at 1 dB step)
  • Sensitivity +/-12dB (0.1dB step)
  • Echo canceller settings (Echo Tail and Mode)
  • POTS Line setting (Country, Line Sensitivity, CPDT Characteristic, Label name)
  • Equalizer Settings (Hi and Bass freq. From 0 to +12dB)
  • GPO 1–4 function settings.

Special Features

The audio treatment via DSP together with the automatic gain control (A.G.C) provides a loud and clear receiving level, always steady even when frequent audio caller conditions changes.Audio controls available on the Macrotel X1 and Macrotel X2 series are: echo canceller with a range from 16 to 32ms, 1 A.G.C stage, 2 Band Equalizer and Attenuator audio feature. Furthermore, the “hold” function allows you to put the caller On Hold before being On Air.Macrotel X1 and Macrotel X2 front panel controls allow operators to manage phone calls easily, while the graphic display LCD shows Send and Receive audio levels.

The audio inputs / outputs are electronically balanced by XLR connectors; the send input has been designed to be managed as line level or microphone level to match perfectly each user needs. Both telephone hybrids are manageable via USB and Serial connection, or directly from Telco N-1 mixing console modules.The software manages the phone hybrid operability globally, that means the user can change the working audio parameters and operative mode without any physical action on the equipments.Auto-ranging internal switching power supply allows to use the equipment all over the world. Macrotel X1 and Macrotel X2 fits in 1 standard RU. 

Technical Specification

General FeaturesMacrotel X1Macrotel X2
Lines1 Pots/Pstn Line or
1 Gsm Line (by option)
2 Pots lines or
2 GSM lines(by option) or
1 Pots line + 1 GSM line (by option)
Phone Line1x RJ11 6/42x RJ11 6/4
Set Line1x RJ11 6/42x RJ11 6/4
GSM Line1x RJ102x RJ10
Line ModeStandard 2-Wire connection or GSM(by option)
Telephone Set modeWorldwide mode, software setup
Audio Features
Audio process24Bit-120Mhz DSP-Based audio process
A.G.CFixed - 1 stage
Echo cancellerYesYes
2-Band EQYesYes
Tone generator0 dBu @ 800 Hz0 dBu @ 800 Hz
Dialer keypad SoftwareYesYes
DTMF DecoderNoNo
Conference ModeNoYes
Auto call Hook/DropYesYes
Front Panel operation
Hook / drop push buttonYes, separate Hook and DropYes, same button for Hook and Drop
Ring lightHook-1 push buttonHook-1 & Hook-2 push button
LCD Panel160x32p LCD graphic display
Level Send & receiveShowed in LCD graphic display
Audio Input and Output
Send Analog-11x XLR female electronically balanced1x XLR female electronically balanced
Send Digital-1NoNo
Receive Analog-11x XLR male electronically balanced1x XLR male electronically balanced
Receive Digital-1NoNo
Send Analog-21x XLR female electronically balanced1x XLR female electronically balanced
Send Digital-2NoNo
Receive Analog-21x XLR male electronically balanced1x XLR male electronically balanced
Receive Digital-2NoNo
Microphone InputSoftware switch Mic/Line
Remote Control
GPIO ConnectorSubD 15p HD
GPIO Type4x GP In optocoupled, 4x GP Out Open Collector optoisolated
USB1x USB – B Type EMI Filtered
Serial2x Rs232 EMI Filtered
Software RemoterYes
GSM Wireless moduleby option
Ethernet Port /Web ServerNo
Parser ASCII protocolNo


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