Configure for T1 Pass Through

[cozyk1515]

I have a Cisco 1700 and was wondering it is was possible to configure as a T1 Pass Through?  The customer is getting a T1 as a backup to our fiber- required by German corporate.  They however, don't want to buy a different Router and want to still use the silly Sonic Wall the IT Person put in.  I was trying to up sell to a Cisco. 

Anyway, they would like to put a 1700 off the T1 but want NO routing done within the 1700 -- just a pass through to convert to Ethernet to hand to the Sonic Wall - which will do all the routing.  ANY IDEAS? 

This is what I am looking to do 

Verizon T1---- To Cisco 1700 Serial 0/0 CSU/DSU no routing - ETH 1/0 -  Hand off to Sonic Wall.

Cheers!

[lobstercreed]

Well that's a heck of a jerk response.  How do you know an ISP wouldn't provide just 1 address (i.e. /30) to a customer over T1?  And why wouldn't they>
As it so happens I'm in the same boat but I do have a /29.  Unfortunately it does me no good since the device I need to connect to the T1 to doesn't have a T1 interface.  If I use my Cisco ISR in-between, I'm still stuck because I can't have the same subnet on both sides of the ISR.  I guess I can do static-NAT, but I'd rather the Cisco ISR just wasn't an addressable part of the equation from the T1 side.  Any ideas, now that 7 years have passed?