9.6 Tbit/s DWDM equipment's been created A 100 Gbit/s signal has been transmitted for a distance of 4,250 km

Irtysh compact CWDM system

Increases a fiber-optic communication line bandwidth using the coarse wavelength-division multiplexing technology (CWDM)


  • Transmits the SDH (up to 2.5 Gbit/s), GbE
  • A built-in CWDM multiplexer (transmits traffic at wavelengths from 1470 to 1610 nm)
  • Up to 8 CWDM channels in one unit
  • Doubled power units 36-72 V DC
  • An optical control channel
  • The compact 1U housing, 19”
  • The SVYAZ system certificate № OS-1-SP-083


IRTYSH system allows transmitting traffic at speeds up to 2.5 Gbit/s (SDH STM-1,4,16, Gigabit Ethernet).

IRTYSH allows organizing up to 8 CWDM channels; it’s possible to transmit 4
CWDM channels in 2 directions. The equipment executes the 3R-reclaiming of a signal, transforms it into spectral channels, which are combined into a baseband CWDM signal by a built-in optical multiplexer. All the optical connections with a multiplexer are done inside the unit; this increases its reliability and usability.

IRTYSH equipment is controlled remotely via a service optical channel at a wavelength of 1310 nm. For long lines it’s possible to use one of the CWDM channels. The local control is done through RJ-45 Fast Ethernet or RS-232 ports.
The compactness (1U, 19”), usability, functionality and an attractive price make the IRTYSH the best solution for organizing city and area CWDM networks.


  • Number of optical channels: 4, 8
  • Number of linear directions: 1-2
  • Client channel power: +2 dBm
  • Doubled power units: 36-72 V DC, power consumption 60 W
  • Network management: SNMP, Monitor 2
  • Built-in Ethernet Switch 2xGbE SFP, 6xRJ-45 Fast Ethernet



ИРТЫШ — 1471 — X — XX (X)
Wavelength of the first channel
(a channel CWDM grid)
  1. 8 client inputs — 1 line output of an aggregate stream (CWDM);
  2. 8 client inputs — 2 line output of an aggregate stream (CWDM);
  3. 4 client inputs — 1 line output of an aggregate stream (CWDM)

(optional)40: range up to 40 km
80: range up to 80 km
150: range up to 150 km
(optional)*Power and sensitivity of client and CWDM channels can depend on the type of installed SFP modules. When calculating the line cost it’s required to consider losses in CWDM multiplexers.