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Modem PCM2/M
(Mini box)


Short Range Modem PCM2/M Features:
  • Up to 2.5 km
  • G.703 2.048 Mbps line interface
  • Full duplex synchronous mode
  • Data interface: Ethernet 10/100Base-T or V.35/RS-530/RS-449/RS-232
  • Selectable data rates
  • Async mode for RS-232
  • Digital, analog, remote and line loopbacks
  • Integrated BER tester
  • Stand-alone
  • 48/60 VDC power
  • Certificate N OS/1-SPD-694 of Russian Ministry of Communications

Sorry, only Russian version available.


Connection of routers through line G.703 2 Mbps

Order codes:

Currently available models are listed in Prices. Please, contact technical support if you are unsure which model to choose.


G.703 Interface (2048 kbps)
Connector Type RJ-48 (female 8 pin)
Line Code HDB3 or AMI
Framing G.704 Not supported
Error Detection Bipolar Violation
Transmit Timing Sources INT (Internal Oscillator), RCV (Receiver), EXT (Digital Interface)
Line Impedance 120 Ohm Balanced (Twisted Pair)
Receive Signal Attenuation Range from 0 to 43 dB (up to 2.5 km of 22 AWG twisted-pair cable)
Jitter Attenuator In the receive paths
Digital Interface V.35/RS-530/RS-449/RS-232/X.21
Data Transfer Rate 2048, 1024, 512, 256, 128, 64 kbps
For RS-232 Port - 128, 64 kbps
Async data rates 115.2; 57.6; 38.4; 19.2; 9.6; 4.8; 2.4; 1.2 kbps
Async symbol formats 8N1, 8P1, 8N2, 7P1, 7P2
Clock Options Supported TXC, RXC, ETC, ERC
Modem Control Signals Supported DTR, DSR, CTS, RTS, CD
Connector Type M-34, female (for interface V.35);
DB25, female (for interface RS-530/RS-232);
DB15, female (for interface X.21);
HDB44, female (for multi-standard interface V.35/RS-530/RS-449/RS-232/X.21)
Ethernet Interface
Interface Type IEEE 802.3 10BASE-T or 100BASE-T (100BASE-TX)
Connector Type RJ-45 (female)
Data Transfer Rate 2048, 1024, 512, 256, 128, 64 kbps
Mode 100 Mbps full duplex,
100 Mbps half duplex,
10 Mbps full duplex,
10 Mbps half duplex,
or autonegotiation
Address Table Size 15000 MAC addresses
Maximum Packet Size 1600 bytes, including MAC header
VLAN Support In acc. to IEEE 802.1q
Protocols Transparent or Cisco-HDLC bridging IEEE protocol, selected automatically
Alarm Interface
Connector Type DB-9 (male)
Relay Contact Current up to 600 mA
Relay Contact Voltage up to 110 VDC or up to 125 VAC
Loopbacks Digital, Remote and Line Loops
BER Tester Integrated
Controlling Microswitches on the forward panel
Dimensions 180 mm x 156 mm x 36 mm
Weight 0,7 kg
Power Source
DC Power Source 36 to 72 VDC
(possible AC Power Source 176 to 264 VAC from Cronyx AC-DC-48)
Power Consumption 20 VA Max
Temperature 0 to +50 °С
Temperature of storing -40 to +85 °С
Relative Humidity 0 to 80 %, non-condensing


Some of the documents are in Adobe® Acrobat® Reader® format

PDF  PCM2/M. User's Manual in Russian
PDF  PCM2/M-ETV. User's Manual in Russian
PDF  Cronyx interface cables guide

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