Carrier with more than 10 years of experience delivering high quality telecommunications services in Mexico. One of the largest fiber optics network of.

• Carrier with more than 10 years of experience delivering high quality telecommunications services in Mexico.

• One of the largest fiber optics network of the country, offering Local and Long Distance termination, Private Lines, Internet and Managed Services.

Background

GTAC

• Onsigna will have access for Carrier and Wholesale Interconnection on the 19.4 thousand kilometers of fiber optic obtained from the CFE´s dark fiber. Planned to be completed 4Q 2011.

• GTAC Routes:

Pacific Route: 8,120 Km.

Central Route: 5,789 Km.

Gulf Route: 5,560 Km.

TOTAL: 19, 469 Km.

Tijuana

Mexicali

P del Carmen

Rosarito ©

Nuevo Laredo

León (m)

Saltillo

Aguascalientes

Guadalajara

Silao

Salamanca

Celaya Querétaro

Yautepec

TexcocoTulaPto. Vallarta

Tepic

Mazatlán

Durango

Gómez Palacio

y Torreón

Main Node

Regenerator

GTAC Fiber Optic

Nogales

Hermosillo

Guaymas

Cd. Obregón ©

Navojoa Los Mochis

Guamuchil

Culiacán ©

Cd. JuárezEnsenada

ReynosaMatamoros

Cd. Victoria

Altamira © - Tampico

Acapulco

Veracruz

Oaxaca

Cd del Carmen

Campeche

Cárdenas

Mérida Cancún

Coatzacoalcos ©

Zacatecas

Chihuahua

Orizaba

Xalapa

Poza Rica

Tuxtla Gutiérrez ©

Morelia

Monclova

Chetumal

Delicias

Parral

Minatitlán (No)

Tecate

Camargo

Cd. Cuauhtémoc

P Peñasco

Caborca

Sta. Ana Cananea

NacozariCasas Grandes

Agua Prieta

La Paz

Cd. Constitución

San José del Cabo

Cabo San Lucas

P. Negras ©

Sabinas y

Nva. Rosita

Uruapan

L CárdenasV de Bravo

Huatulco

Pinotepa Nacional Salina Cruz

Juchitán

M Romero ©

Pto. Angel

Villahermosa

Tapachula ©

Manzanillo

Colima

S L Rio Colorado

Guanajuato

Quetzal Project

Puebla

Moctezuma

TopolobamboLinares

Cd GuzmánOcotlán

Irapuato

Zamora

Zihuatanejo

Escárcega

© Complementary Segment

Huinala (m)

Monterrey

México

San Juan de los Lagos

Fresnillo

GTAC Network

• Tijuana, B.C. – San Diego, CA• Cd. Juarez, Chih. – El Paso, TX• Nuevo Laredo, Tamps. – Laredo, TX• Reynosa, Tamps. – McAllen, TX• Nogales, Son. – Nogales, AZ• Mexicali-Calexico, CA.

MORE TO COME……..

Cross Borders

Onsigna POP’s in the USA-(more to come….)

Street City ZP NPA/NXX CLI

100 Taylor Street, Suite 301 San Antonio, TX. 78205 210-229

231 Rotary Avenue San Antonio, TX. 78202 210-222

2675 Walsh Road San Antonio, TX 78224 210-628

520 Iturbide Street Laredo, TX. 78041 956-7122323 Bryan Street, Suite 2040 Dallas, TX. 75201 214-8801950 North Stemmons Freeway suite Equinix Dallas, TX. 75207

200 S10 St. Ste. 402 McAllen, TX 78501 956-632

3180 University Ave. San Diego, CA. 92104 619-507

1176 Kastrin, St. El Paso, TX. 79905 915-779