Axerra Networks completed interoperability testing between its multiservice IP concentrator and Ericsson’s Multi-Service Access Device (MSED) HL950 using Circuit Emulation Service over Packet Switched Network (CESoPSN). CESoPSN, also known as CESoIP, is used to emulate the characteristics of circuit-switched connections while utilizing an IP or Ethernet-based infrastructure. CESoPSN emulates both the payload and timing characteristics of a circuit. The interoperability tests simulated an IP Metro network with multiple HL950s situated at various customer premises. Each HL950 furnished a legacy T1/E1 at the customer side and an Ethernet port on the network side. The HL950s performed service adaptation to emulate leased lines over an IP broadband access network. Axerra’s IP concentrator served as the central office gateway to the PSTN.
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- In March 2002, Ericsson agreed to distribute, integrate and support Axerra Networks’ Multiservice IP Concentrators as part of the Ericsson Packet Backbone Network (PBN) solutions portfolio. As part of the OEM agreement, the two companies said that they would also explore cooperative technology opportunities to develop integrated MSoIP solutions. One of the services supported by Axerra’s MSoIP technology is Circuit Emulation Service over IP, which has been submitted as an Internet Draft to the Pseudo-Wire Emulation Edge-to-Edge (PWE3) working group in the IETF.