• Up to 16 T1 links, full bandwidth 100 MbpsEthernet traffic and high-speed data multiplexed into fiber optic uplink
• 25 Mbps or 125 Mbps operation modes
• Single-mode, multimode, single-mode over single fiber, SFP-based interfaces
• Range of up to 110 km (68 miles)
• Optional additional hot-swappable power supply and uplink for redundancy
RAD's Optimux-125 ( OP-125 ) provides a simple, flexible, and cost-effective solution for transporting multiple
T1 links, high-speed data and Ethernet over fiber link, to distances of up to 110 km (68 miles).
RAD's Optimux-125 ( OP-125 ) features two license-activated operation modes:
In 25 Mbps operation mode, the units are fully compatible with Optimux-25.
In 125 Mbps mode, the products feature transport at 100 Mbps user Ethernet traffic.
The fiber optic link is available with single-mode, multimode, and single-mode over single fiber interfaces.
The Optimux-125 ( OP-125 ) uplink with fiber interfaces is proprietary in both device operation modes.
In 25-Mbps operation mode, the unit multiplexes up to 16 T1 links. The data rate of the TDM ports can partially be replaced (user-selectable) by the 10/100BaseT user Ethernet
traffic or by an optional high-speed data V.35interface (see Table 1).
Optimux-125 ( OP-125 ) Uplink Interfaces
Various interfaces (based on SFP transceivers) are available for both the active and the backup uplinks (see Table 2 and Ordering Options):
1310 nm short or long-haul laser and 1550 nm long-haul laser interfaces for extended range over single-mode fiber
Single fiber interface using WDM technology, with the laser transmit signal at a different wavelength than the receive signal (1310 nm and 1550 nm).
Optimux-125 ( OP-125 ) Link Redundancy
Upon link failure, the unit automatically switches to an optional second uplink as a backup.
Optimux-125 multiplexes 16 T1 channels. The T1 interfaces comply with the ITU-T G.703. Line coding is HDB3 or B8ZS, respectively. A pair of LEDs monitors
loss-of-signal and AIS on each T1 receive line.
OP-125 Fast EthernetInterface
Optimux-125 feature fast Ethernet ports enabling a full 100-Mbps Ethernet connection in addition to the capacity of the 16
T1 channels. The Optimux-125 is supplied with a 10/100BaseT Ethernet USER port. This port is activated via a software key. The license can be purchased for
6-Mbps granularity to work in 25-Mbps operation mode, or for full bandwidth to work in
125-Mbps operation mode.
Optional V.35interface available on Optimux-125 ( OP-125 )
The Optimux-125 can be supplied with one V.35 (2048/1544 kbps) channel that replaces channel 16 by user activation. The V.35interface can only be used in
25-Mbps operation mode.
RAD OP-125 timing
The OP-125 transmits each T1 channel separately so that the clock of each
T1 channel is independent. The Optimux-125 supports internal and loopback timing modes.
The 125-Mbps operation mode uses only Internal timing.
Typical applications for the Optimux-125 ( OP-125 )
In private networks, Optimux-125 shares campus services such as Ethernet, Voice, Data and Video in P2P (Figure 1) and Star topologies over dark fiber.
Optimux-125 establishes TDM and Ethernet connectivity between the remote branches and headquarters for educational, financial, military sectors.
Traffic Backhaul Application
Optimux-125 transparently backhaul TDM & ETH traffic over fiber or coax uplink (see Figure 3).
OP-125s connect cellular base stations to controllers. This solution meets the requirements of cellular backhaul applications by providing TDM and Ethernet traffic for CDMA and GSM connectivity.
The Optimux-125 ( OP-125 ) units backhaul WiMAX traffic from remote locations over dark fiber links at a distance of up to 110 km (68.3 miles).
Optimux-125 ( OP-125 ) diagnostics
Optimux-125 ( OP-125 ) features comprehensive test and diagnostic capabilities that include local and remote loopbacks on the uplink interface and on each
T1port. A local loopback is also supported on the optional V.35 user port.
To ease system diagnostics, Optimux-125 features LED status indicators and AIS alarm generation and recognition.
The OP-125 also feature dry contact closure upon link failure. An optional alarm port is available with dry relay contacts for major and minor alarms.
Management of the Optimux-125 ( OP-125 )
The Optimux-125 units can be configured and monitored with a number of management and diagnostic tools. An ASCII terminal and Telnet provide local management. Remote
management and diagnostics can be performed via a RAD Web-based management application or an SNMP-based management application. The products working in
25-Mbps operation mode can be managed RADview, RAD's SNMP-based management application.
Optimux-125 ( OP-125 ) Physical information
Optimux-125 is a compact, 1U-high unit.
All the units can be mounted in a 19-inch rack.
The wide-range AC/DC power supply can be connected to either an AC power source (90 to 260 VAC), or a DC power source (–40 to -72 VDC). The units may also be ordered with a +24 VDC (20 to 72 VDC) power supply.
A second power supply can be ordered for power redundancy.