[cisco-voip] Getting started in SIP...

[Robert Kulagowski]

Are there things that folks are doing to get familiarized with SIP
trunking from providers without committing to a 1 year contract?  Is
there a way to experiment "in house" that is applicable once you get a
SIP trunk from a provider?  Still trying to determine if there's a
cost justification in moving from a TDM-style PRI configuration to a
SIP trunk configuration.  Or is it not a cost justification that's
driving this train?