NEC

NEC is one of the world’s largest manufacturers microwave radio and optical transmission equipment. They have an excellent reputation for the manufacture of highly functional and reliable products, with their equipment forming the core of many of the world’s national transmission networks.

MMX Communcations Services is able to offer the complete range of NEC microwave radio and optical transmission products, with the Pasolink family being particularly successful in our market sectors.  The Pasolink family of microwave radios has been in continuous development for almost 30 years with the most recent version, the iPasolink, being released in 2010. This is a highly integrated and scaleable family of products designed to address a wide range of customers and markets by providing PDH, SDH and Ethernet (up to 10GbE) connectivity over both microwave and optical transmission media.

The current trend towards use of IP has presented many of our customers with the challenge of providing connectivity for both TDM and IP traffic over the same network. A particular strength of iPasolink is that it provides simultaneous native support for both TDM and IP traffic, permitting phased migration of legacy traffic from TDM to IP transmission when the time is right. Alternatively, by using Pseudo-Wire Emulation (PWE), TDM traffic can be offloaded onto the packet network to reduce leased-line usage and improve utilisation of the packet-network.

The iPasolink range of products is available in 3 variants – iPasolink 200, iPasolink 400 and iPasolink 1000 – broadly aimed at network edge, network aggregation and network core applications respectively. All versions support the following core functionality:

  • Frequency bands from 4GHz to 38GHz (with a common family of small, powerful ODUs across all iPasolink variants)
  • Transmission capacities from 8Mbit/s to 440Mbit/s using modulation schemes up to 256QAM in bandwidths up to 56MHz. Capacity can be further increased to 880Mbit/s on a single frequncy if XPIC is used.
  • Automatic modulation reduction (AMR) to maintain link availability under hop fading conditions.
  • Simultaneous native IP and TDM transmission, and support for hybrid TDM / IP networks.
  • E1, Fast Ethernet, Gigabit Ethernet (optical and electrical) and SDH (optical and electrical) traffic interfaces.
  • QoS and VLAN support.
  • Pseudo-Wire Emulation (PWE) for transmission of TDM traffic over packet networks
  • SNCP TDM ring protection and Ethernet ring protection.
  • Synchronous Ethernet.
  • MPLS support
  • Embedded web-based LCT for easy configuration and monitoring, with the NEC PNMSj network management system available for network-wide control and management.

iPasolink 200

iPasolink 200 is designed for use as a stand-alone radio terminal in either 1+0 unduplicated or 1+1 duplicated configuration. It offers a low-cost entry to the iPasolink family incorporating the core functionality outlined above and with E1 and Ethernet connectivity included in the basic terminal. Specific features are:

  • 2 off built-in radio modems (for up to 2+0 or 1+1 operation)
  • 4 off electrical Ethernet ports (FE or GbE), 2 off SFP ports for GbE, and 16 off E1 ports on the main board.
  • 1 Option slot to accommodate additional E1, STM-1 or PWE interface modules.
  • 1 Option slot to accommodate an AUX alarm interface module. 

iPasolink 400

iPasolink 400 offers similar functionality to the iPasolink 200, but in a more modular package. It can also accommodate up to 4 off radio modems, extending its application to small nodal aggregation sites, or as a hot-standby repeater. For added reliability, a redundant power supply module can also be added.

Key features are:

  • 2 off electrical Ethernet ports (FE or GbE), 2 off SFP ports for GbE and 16 off E1 ports on the main board.
  • 4 off universal option slots to accommodate radio modems and additional E1, GbE, STM-1, PWE and AUX interface modules
  • Optional duplicated power supply.
  • 126E1 x 126E1 cross-connect plus a powerful packet switch.
  • Support for Ethernet ring protection.

iPasolink 1000

iPasolink 1000 offers a highly configurable and flexible architecture which can find applications in high-density nodal sites (supporting up to 12 off 1+0 radio links), at the interface between the radio and optical networks using 10GbE and CWDM technology, and in high-reliability applications requiring core hardware redundancy. iPasolink 1000 provides all of the functionality of iPasolink 400 with the following main additions:

  • 2 off electrical Ethernet ports (FE or GbE), 2 off SFP ports for GbE on the main board.
  • 14 off universal option slots to accommodate radio modems and additional E1, GbE, STM-1, PWE and AUX alarm interface modules
  • Compatibility with iPasolink 400 interface modules plus additional 10GbE and CWDM network core interfaces.
  • Optional power supply and main board redundancy