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Designer and manufacturer of communication equipment
Russia (GMT +7)

Optical multiplexer ToPGATE-2STM1-2FG

  • Up to 126 E1 streams transmission via TDMoP that provides transparent connection of any E1 equipment without quality deterioration
  • Embedded full-featured L2 switch supports all the required standards for modern networks construction: traffic prioritization with 4 priority queues, VLAN
  • Building of combined networks with different bandwidth and technologies using 100M, 1G and 10G part of networks. Opportunity of bandwidth extension on Ethernet level or increasing of E1 streams quantity
  • 2 interfaces of 1000Base-X for optic lines connection and support for RSTP (802.1w) for effective and fault-tolerant operation in modern distributed Ethernet networks with complicated ring topology with redundancy, e.g. ring with spurs, tree
  • Local (through the serial USB port) and remote management and diagnosis
  • Support for SNMP, Web, Telnet, local management console, port mirroring, opportunity to save and modify text configurations
TopGATE-2STM1-2FG multiplexer is dedicated for demultiplexing of structured and unstructured E1 streams (G.703, G.704) out of STM-1 stream (SDH) and for transmission of this data through packet data network (Ethernet) via TDMoP. Due to the embedded full-featured Gigabit Ethernet L2+ switch and 2 optic-fiber interfaces (up to 80 km link distance for a single fiber), there is an opportunity to built small transport networks without additional equipment.

Documents and files
STM1 interfaces
  • Quantity: 2 SFP
  • Standard: G.707
  • Synchronisation: inner, incoming Е1 stream synchronisation
  • Transmission delay: from 2.5 ms to 512 ms
Ethernet interfaces
  • Quantity: 4
  • 2 Gigabit Ethernet (RJ-45)
  • 2 Gigabit Ethernet (SFP)
  • Cooper interfaces standards: IEEE 802.3i 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T, IEEE 802.3x Flow Control
  • Optical interfaces standards: IEEE 802.3u 100Base-FX, IEEE 802.3z 1000Base-X, IEEE 802.3x Flow Control
Parameters and capabilities
  • Bandwidth: 3.9 Gbps, 5.95 Mpps
  • MAC table: 1024 entries
  • Maximum frame size: 1632 bytes
  • IGMP Snooping
  • Redundancy: STP (802.1.d), RSTP (802.1w), Root guard
  • Port mirroring
  • DHCP
  • Static Mac
  • 4 priority queues 802.1p
  • CoS based on: switch port, VLAN, DSCP, TOS, source/destination MAC address
  • Bandwidth management: step 64 kB
  • VLAN: IEEE 802.1Q standard, values range from 0 to 4095, Q-in-Q – double tagging;
  • MVR (Multicast VLAN Registration)
  • Local management: 1 USB port, 1 RS-232
  • Management through IP network: Telnet CLI, menu,
  • Web interface, SNMP v1, v2
  • Soft update NMS
  • Equipment management, e.g. PBX management via AUX port
  • Dimensions (WxHxD, mm): 430х44х150, 19" formfactor, 1U, wall mounting
  • Weight 2 kg
Power supply
  • 220 VAC, -48 VDC
  • Maximum power consumption 10 W

Operational lifetime of the ELTEX equipment
In development
Mass production
Mass production is over
Sold out
Support is over
Regardless of the operational lifetime stage, Eltex provides a 12 months warranty on all its telecommunication equipment.
During the warranty period the manufacturer ensures technical support and free-of-charge repair at the Enterprise which is situated in Novosibirsk.
As part of the warranty service, technical support is provided on the first-in first-out principle.
The priority support packages of 8/5 and 27/7 types are subjects to additional charges.

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