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→Different Types of VPN Services
[http://technologyinside.com/2007/03/08/networks-part-6-sdh-the-great-survivor/ SONET – SDH, the great survivors]</ref> and DWDM (Dense Wavelength Division Multiplexing), a technology which allows the delivery of ten of terabits of data over a single fiber using 40 to 80 simultaneous wavelengths.<ref>[http://technologyinside.com/2007/03/30/making-sdh-dwdm-and-packet-friendy/ Making SDH and DWDM packet friendly]</ref>
[http://technologyinside.com/2007/03/08/networks-part-6-sdh-the-great-survivor/ SONET – SDH, the great survivors]</ref> and DWDM (Dense Wavelength Division Multiplexing), a technology which allows the delivery of ten of terabits of data over a single fiber using 40 to 80 simultaneous wavelengths.<ref>[http://technologyinside.com/2007/03/30/making-sdh-dwdm-and-packet-friendy/ Making SDH and DWDM packet friendly]</ref>
==Benefits of VPN==
==References==
==References==