T1 Emulator?

Anyone know of a device on the market that will emulate a T1 connection? Analog phone line to T1 OR ethernet to T1. I want to do some testing with my RAS hardware and would like to emulate the T1 connection prior to ordering a T1 due to the costs.
I realize I would not have T1 speed, just the protocol....

thanks...

 

 

 

 

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