EXHIBIT 8

DEED OF ADHERENCE

To:

TELECOM ITALIA S.p.A .

TELECOM ITALIA INTERNATIONAL N.V.

W de Argentina - Inversiones S.L.

LOS W S.A.

Gerardo Werthein

Dario Werthein

Daniel Werthein

Adrian Werthein

Dear Sirs,

We make reference to the Amended and Restated Shareholders’ Agreement (the “Shareholders’ Agreement”), dated August 5, 2010, as amended further on October 13, 2010, on March 9, 2011 and on November 13, 2013, entered into by and among Telecom Italia S.p.A. (“TI”), Telecom Italia International N.V. (“TII”), W de Argentina – Inversiones S.L. (“Los W”), Los W S.A. (“Los W Guarantor Company”) and Gerardo Werthein, Daniel Werthein, Dario Werthein and Adrian Werthein (collectively “Los W Controlling Shareholders”), concerning their respective participation in Sofora Telecomunicaciones S.A. (“Sofora”) and to the willingness of Fintech Telecom, LLC to become a party of the Shareholders’ Agreement pursuant to terms and conditions of this deed of adherence (the “Deed of Adherence”).

All capitalized terms used but not otherwise defined herein shall have the meaning ascribed to them in the Shareholders’ Agreement.

1.	Adherence and Undertakings

1.1 Fintech Telecom, LLC, a limited liability company organized and existing in accordance with the laws of Delaware, with its head office at 375 Park Avenue 38th Floor, New York, NY 10152 (“Adhering Party”) hereby irrevocably and unconditionally adheres to the Shareholders’ Agreement (a copy of which has been delivered to Adhering Party and which Adhering Party has reviewed and executed and attached hereto as Annex 1 for identification) as a party thereto, hereby irrevocably and unconditionally agreeing to be directly bound by any and all terms and conditions of the Shareholders’ Agreement, including its Exhibits and appendixes.

1.2 The Adhering Party hereby agrees that, by executing this Deed of Adherence, it shall be deemed to have been a Party (as defined in the Shareholders’ Agreement) to the Shareholders’

Agreement subject to the occurrence of the closing of the transactions contemplated under, and solely in accordance with the terms of, the Stock Purchase Agreement dated November 13, 2013, among Fintech Telecom, LLC, TI and TII, as amended from time to time by the parties thereto, pursuant to which TI and TII have agreed to sell to Fintech Telecom, LLC all of their direct and indirect ownership interest in Telecom Argentina S.A.

Notices

The Adhering Party confirms that its address for serving notices pursuant to the Article 17 “Notices” shall be the following:

Fintech Telecom, LLC

375 Park Avenue 38th Floor

New York, NY 10152

Tel: 212 593 3500

Fax: 212 593 3461

Attn: J.R. Rodriguez, Erika Mouynes

Email: jrr@fintechadv.com, em@fintechadv.com

Copy to:

Cleary Gottlieb Steen & Hamilton LLP

One Liberty Plaza

New York, NY 10006

Tel: 212 225 2000

Fax: 212 225 3999

Attn: Rich Cooper

Email: rcoopercgsh.com

Errecondo Gonzalez Funes

Tone Fortabat

Bouchard 680 — C1106ABH

Tel: (54 11) 5236 4400

Fax: (54 11) 5236 4401

Attn: Baruki Gonzalez

Email: baruki.gonzalez@egfa.com.ar

Sincerely,

FINTECH TELECOM, LLC

By:	/s/ Julio Rafael Rodriguez, Jr.
	Name: Julio Rafael Rodriguez, Jr.
	Title: Authorized Person

By:	/s/ Erika Mouynes
	Name: Erika Mouynes
	Title: Authorized Person

Accepted and Agreed:

TELECOM ITALIA S.p.A.

By:	/s/ Piergiorgio Peluso
	Name: Piergiorgio Peluso
	Title: CFO

TELECOM ITALIA INTERNATIONAL N.V.

By:	/s/ Guglielmo Noya
	Name: Guglielmo Noya
	Title: Attorney in Fact

Accepted and Agreed:

W de Argentina – Inversiones S.A. (formerly denominated W de Argentina – Inversiones S.L.)

Gerardo Werthein

/s/ Gerardo Werthein

Los W Guarantor Company

Daniel Werthein

/s/ Daniel Werthein

Los W Controlling Shareholders

Dario Werthein	Daniel Werthein

/s/ Dario Werthein	/s/ Daniel Werthein

Adrian Werthein	Gerardo Werthein

/s/ Adrian Werthein	/s/ Gerardo Werthein