Software allows carriers to mutually exchange call traffic.

Press Release Summary:



Querying inbound call attempts against SPIDER Registry supported database, PeeringSolutions sends routable calls via its switches to terminating members based on instructions from this database. ANI/DNIS feature screens and filters traffic between call origination and termination points. Targeting domestic carriers, product also features local number portability routing, jurisdictional rating, protocol conversion, customizable arrangements, and DID exchange.



Original Press Release:



Arbinet Launches PeeringSolutionsSM for US Domestic Market



Seven US Competitive Operators Agree to Exchange and Settle Domestic Traffic

NEW BRUNSWICK, N.J., Feb. 27 -- Arbinet-thexchange, Inc. (NASDAQ:ARBX), the leading provider of solutions to simplify the exchange of digital communications, announced today introduction of its managed paid PeeringSolutions offering, customized for the US Domestic market at the COMPTEL Spring 2007 Convention & Expo in Las Vegas. Initial participants include XO Communications, PAETEC Communications, InfoHighway Communications, BBCOM, RIO Communications, plus two unnamed service providers.

PeeringSolutions allows US Domestic carriers, including competitive local exchange carriers (CLECs), cable and mobile operators, to peer and exchange traffic with each other regardless of their network technology. Arbinet queries each inbound call attempt against a database supported by the SPIDER Registry and sends routable calls via its switches to terminating Members based on instructions from this database. Settlement for these calls is determined and agreed upon by the providers, with a variety of settlement options including traditional paid settlement and bill and keep agreements, allowing carriers to maintain full control of the economics of their business.

"Arbinet's PeeringSolutions provides efficient call-by-call routing between Members supported by ANI/DNIS screening and jurisdictional rating," stated Curt Hockemeier, President and CEO of Arbinet. "Additionally, these carriers gain access to Arbinet's 700+ global Members, allowing them to exchange traffic with international providers and smoothly transition to VoIP peering at their own pace.

"Customized features for the PeeringSolutions US Domestic offering include:

o Automatic Number Identification (ANI)/Dialed Number Identification
Service (DNIS) Screening - correctly screens and filters traffic between
call origination and termination points

o Jurisdictional Rating - applies correct seller's price call by call
(local, intrastate, interstate)

o Local Number Portability Routing - ANI & DNIS queried for comprehensive
routing accuracy

o Protocol Conversion - TDM-to-VoIP or VoIP-to-TDM conversion integrated
in the solution

o Consolidated Settlement - single party billing and settlement

o Customizable Arrangements - peer on a Semi-Public level or via Private
arrangements, Member by Member

o DID Exchange - offer DID numbers to other global carriers

Joe Ambersley, Executive Vice President, PAETEC Communications and Vice Chair/Treasurer of COMPTEL commented, "PeeringSolutions gives a competitive carrier a simple way to establish and manage paid peering relationships with other carriers in the U.S. and internationally. The carrier maintains control of its payment terms for terminating minutes and benefits from the high call quality generated by direct routing to and from other paid peering members. In addition, the competitive carrier eliminates intermediary carrier termination fees, improving its cost structure. PeeringSolutions also eliminates expenses associated with carrier access billing (CABS) and provides interoperability between TDM and VoIP networks, delivering the benefits of VoIP peering today without requiring costly network upgrades."

Edwin Lara, Account Executive of Verizon Dominicana states, "We are currently peering through Arbinet and selling access to our network to Arbinet's community of global peering partners. This solution has increased our revenues with excellent call quality and simple, streamlined billing and settlement. We are pleased to see continuing growth of Arbinet's peering community, as we will benefit from increased traffic and gain the ability to terminate our customers' calls to new networks around the world.

"Arbinet's global peering community now includes 141 million numbers from 55 service providers including Telecom Argentina, Telefonica Argentina, Columbus Communications Jamaica, Telefonica Chile, Telefonica Peru, Telmex Chile, and Verizon Dominicana.

About Arbinet

Arbinet solutions simplify the exchange of digital communications in a converging world. These include exchanges, a transaction management platform, and managed services which streamline performance and improve profitability for Members.

Arbinet's 900 voice and data Members, including the world's 10 largest international carriers, use Arbinet's Internet based electronic platforms to buy, sell, deliver and settle transactions valued at about $500 million in 2006. These Members include fixed, mobile and VoIP carriers, ISPs and content providers from more than 60 countries who exchange voice, data, content and value added services.

120 Albany St. Tower II, Suite 450

New Brunswick, NJ 08901

phone: 732-509-9100

fax: 732-509-9101

website: www.arbinet.com.

Chris Reid

Arbinet-thexchange

1.732.509.9160

creid@arbinet.com

FCMN Contact: kristen@stcassociates.com

Source: Arbinet-thexchange, Inc.

Web site: www.arbinet.com/

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