  Currently, the development of research around VoIP experience a tremendous
growth. In the community of open source Asterisk represents a reliable
alternative for a lower cost solution. In this same community as the SIP
protocol is a supplement to the more asterisk PBX. to share the benefits
claimed by proponents of free software co-existence with other Asterisk server
is not yet proven. In this context this paper we show a comparison of the use
of simplified resource material for the apache server using the HTTP protocol
and server that uses the asterisk SIP.
