Journalists and analysts who would like to meet with OpSourceexecutives at Interop should contact Eileen Conway ut OpSourceOpSource(TM) delivers Software-as-a-Service (SaaS) and Web applicationsfor on-demand companies, with hundreds of applications, millions of usersand billions of transactions supported daily. "Interop and the Enterprise Cloud Summit will offer our community agreat chance to strategize on how to clear any final hurdles to makingmass adoption of the enterprise-ready Cloud possible."OpSource will also be exhibiting in Interop's Cloud Computing Zone, Booth855. and Dym will speak on"Paying for It: Cloud Costs and Business Models" from 10:15-11:15 a.m."2009 is undoubtedly the year of the Cloud, and we are excited to beplaying an integral role in driving this key technology forward," Ryansaid. as part of Interop's SaaS computing track.Beck and Dym will participate in two sessions at the Enterprise CloudSummit on Tuesday, May 19th: Beck will participate in the "WhatElasticity Really Means" panel from 9:10-9:55 a.m. As an expert in Cloud computingand a pioneer in the creation of the enterprise-ready Cloud, OpSource willbe a key participant in the first ever Enterprise Cloud Summit, a two-day,co-located conference for IT managers and business executives to gatherinformation, discover new Cloud technologies and meet vendors.Ryan will speak on "Herding Cats: Managing SaaS Sprawl" on Tuesday, May19th, from 10:15-11:15 a.m. Interop, the world's largest and most comprehensivebusiness technology event, will cover major industry themes and presentcost-saving IT solutions to increase revenue and improve competitiveadvantage.OpSource executives will cover key issues concerning the Cloud andSoftware-as-a-Service (SaaS) marketplaces.

SANTA CLARA, CA, May 11 (MARKET WIRE) -- OpSource(TM), the leader in Web operations, today announced that CEO TrebRyan, CMO Richard Dym and SVP of Sales Jon Beck will speak at Interop LasVegas, which will take place at the Mandalay Bay Convention Center in LasVegas, May 17-21. AND SUBSIDIARIES (UNAUDITED)Summary of Operating StatisticsFor the Three Months Ended March 31, 2009March 31, 2008Subscribers Gross Additions 60,60059,200Net Additions 9,000 10,700Total Subscribers 700,100 640,600 Churn, net2.3%2.3% Average Revenue Per User, Monthly Including Roaming$63 $64Without Roaming$50 $48 Cash Cost Per User, Monthly Including Roaming$40 $40Without Roaming$31 $31 Cost Per Gross Addition$402$399Licensed Population (Millions)15.115.1 Covered Population (Millions) 12.512.0 Cell Sites1,912 1,696 iPCS, INC. The forward-looking statements in thisdocument speak only as of the date of the document and iPCS assumes noobligation to update the forward-looking statements or to update the reasons whyactual results could differ from those contained in the forward-lookingstatements iPCS, INC. For a detailed discussionof these and other cautionary statements and factors that could cause actualresults to differ from iPCS's forward-looking statements, please refer to iPCS'sfilings with the SEC, especially in the "risk factors" section of the AnnualReport on Form 10-K for the fiscal year ended December 31, 2008 and our Form Qfor the quarter ended March 31, 2009 to be filed following the earnings callreferenced in this press release.Investors and analysts should not place unduereliance on forward-looking statements.

This non-GAAPmeasure should be used in addition to, but not as a substitute for, the analysisprovided in the statement of cash flows. * Free Cash Flowis defined as the net increase (decrease) in cash and cashequivalents less the change in debt (including payment in kind, or "PIK"interest), proceeds from the exercise of common stock options or the issuance orrepurchase of common stock and other financing activities, net. The number of residents covered by ournetwork does not represent the number of wireless subscribers that we serve orexpect to serve in our territory. * Covered Population represents the number of residents covered by our portionof the wireless network of Sprint. The number of residentslocated in our territory does not represent the number of wireless subscribersthat we serve or expect to serve in our territory. * Licensed Population represents the number of residents in the markets in ourterritory for which we have an exclusive right to provide wireless mobilitycommunications services under the Sprint brand name.

These costs include handset subsidies onnew subscriber activations, commissions, rebates and other selling and marketingcosts. We calculate CPGA by dividing (a) the sum of cost of products sold lessproduct sales revenue associated with transactions with new subscribers, andselling and marketing expense, net of stock-based compensation expense, duringthe measurement period, by (b) the total number of subscribers activated in ourterritory during the period. * CPGA, or cost per gross addition, is a measure of the average cost we incur toadd a new subscriber in our territory. These costs are divided bythe number of our average monthly subscribers during the period divided by thenumber of months in the period. * CCPU, or cash cost per user, is a measure of the monthly costs to operate ourbusiness on a per subscriber basis consisting of costs of service andoperations, and general and administrative expenses in our consolidatedstatement of operations, plus handset subsidies on equipment sold to existingsubscribers, less stock-based compensation expense.