Global Crossing was selected to provide its SIP Trunking solution to support Microsoft Technology Centers in the United States. As a Microsoft Technology Center Alliance Partner, Global Crossing will provide SIP Trunking services and access for demonstrations of Microsoft Lync Server 2010 unified communications services. The partnership will allow businesses visiting the Microsoft Technology Centers to see how SIP Trunking enables external collaboration and reduces conferencing costs using Lync Server 2010.

1. Global Crossing’s SIP Trunking Solutions Selected to
Support Unified Communications at
Microsoft Technology Centers
FOR IMMEDIATE RELEASE: TUESDAY, MARCH 1, 2011
Florham Park, N.J. – Global Crossing (NASDAQ: GLBC), a leading IP solutions provider, has
been selected to provide its Session Initiated Protocol (SIP) Trunking solution to support
Microsoft Technology Centers (MTC) throughout the United States. These centers show
enterprise customers how feature-rich unified communications (UC) services can benefit their
businesses. SIP Trunking is the enabling technology that network providers rely on when
establishing a broad range of UC tools, such as "presence" solutions. As a result of this
affiliation, Global Crossing has become an MTC Alliance Service Partner.
MTCs provide a collaborative environment that offers access to innovative technologies and
world-class expertise, enabling businesses to envision, design and deploy unified
communications solutions that meet their specific needs.
“This is a great opportunity for Global Crossing to leverage our award-winning SIP Trunking
®
solutions to help businesses implement unified communications services connected to Microsoft
TM
Lync Server 2010,” said Neil Barua, managing director for North America at Global Crossing.
“As one of a handful of companies qualified to provide these services to Microsoft, we are excited
to be part of their technology centers.”
As an MTC Alliance Partner, Global Crossing will provide SIP Trunking service and access for
MTC facilities for customer engagements and Voice over IP demos, as well as take advantage of
Microsoft’s on-site technical support for Lync Server 2010 demos for all enterprise customers who
visit the MTCs.
“Partnering with Global Crossing has allowed the U.S. MTCs to showcase the flexibility of our
Lync Server 2010 voice platform with SIP Trunking, enabling external collaboration and reducing
third-party conferencing costs,” said Andrew Page, technical architect at the Chicago MTC.
MTCs in North America are located in Atlanta, Ga.; Boston, Mass.; Chicago, Ill.; Dallas, Texas;
Detroit, Mich.; Irvine, Calif.; Minneapolis, Minn.; Philadelphia, Pa.; Reston, Va., and in Silicon
Valley, California.
Global Crossing is among a select group of companies worldwide that is qualified to provide SIP
Trunking for Lync Server 2010. The company is working with beta customers on SIP Trunking
implementations with Microsoft Lync Server 2010. Formerly known as Office Communications
Server 2007 Release 2 (R2), Lync Server 2010 is the next generation of Microsoft Corporation’s
UC server and software that enables businesses to connect in new ways anytime, anywhere.
Global Crossing's SIP Trunking solutions offer cost savings by eliminating the deployment and
management of additional communications equipment. This simplified infrastructure increases
productivity through easier-to-use communications tools and maximized bandwidth utilization in a
converged environment.
ABOUT GLOBAL CROSSING
Global Crossing (NASDAQ: GLBC) is a leading global IP, Ethernet, data center and video
solutions provider with the world's first integrated global IP-based network. The company offers a

2. full range of data, voice, collaboration, broadcast and media services delivered with superior
customer service.
Global Crossing provides services to enterprises (including approximately 40 percent of the
Fortune 500); government departments and agencies; and 700 carriers, mobile operators and
ISPs. It delivers converged IP services to more than 700 cities in more than 70 countries, and
has 17 world-class data centers in major business centers around the globe.
Please visit www.globalcrossing.com for more information about Global Crossing.
###
CONTACT GLOBAL CROSSING:
Press Contacts
Kate Rankin
+ 1 973 937 0417
Kate.Rankin@globalcrossing.com
Michael Schneider
UK and Europe Region
+44 1270 534204
Michael.Schneider@globalcrossing.com
Paula Vivo
Latin America
+ 55 11 3957 2424
Paula.Vivo@globalcrossing.com
Analysts/Investors Contact
Mark Gottlieb
+ 1 800 836 0342
glbc@globalcrossing.com
GEN/PR1
http://www.globalcrossing.com/enterprise/sip_trunking/sip_trunking_landing.aspx