Is often difficult find support for the MFC/R2 signaling. Here is a list of companies or individuals offering support. Also you can ask questions in the asterisk-r2 mailing list.

Moisés Silva - Desarrollador de OpenR2 (moises.silva en el correo de google)

http://www.libopenr2.org/

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Neocenter S.A. de C.V. - Mayorista de convergencia (México)

http://www.neocenter.com/

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Nucleum - Telefonía IP y Linux (México)

http://www.nucleum.com.mx/

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Voxix - Soluciones Unificadas de Comunicación (México)

http://www.voxix.com/

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Xmarts - Soluciones Inteligentes (México)

http://www.xmarts.com.mx/

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Alexandre Alencar (Brasil)

http://www.alexandrealencar.net/

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Flavio E. Goncalves (Brasil)

http://www.asteriskguide.com/

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Asteriks - Alexandre Keller (Brasil)

http://www.asteriks.com.br/

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Renato dos Santos (Brasil)

shazaum@gmail.com

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CodeVoz (Guatemala)

http://www.codevoz.com/

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Ing. Fernando Villares - INTELIX INGENIERÍA (Argentina, Colombia, Perú, Ecuador, Venezuela)

http://www.intelix.com.ar/

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VNaster (Vietnam)

http://www.vnaster.com/

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Kelvin Chua (kelvin@nextixsystems.com) - NextIX (Philippines)

http://www.nextixsystems.com/

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Open Technologies C.A (Venezuela)

http://www.opentechnologies.com.ve/

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Iconos (Venezuela, Colombia)

http://www.iconos.com.ve/

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Links Global Services (Venezuela)

http://www.lgs.com.ve/