56k circuit to T1 - possible?

[JoshGH]

I have a question concerning 56k leased lines and their connectivity. A bank customer of mine is looking at a 56k line to an ATM (automatic teller machine, not the service). I have never worked with these so it is unfamiliar territory. I believe we would need a router with WIC-1DSU-56K4 at the ATM side of the circuit, but my question is on the host side of the circuit. Will these circuits only interface with a WIC-1DSU-56K4 or can they go into a T1 interface as the first channel? I am thinking not because some documents say they do not have timeslots and the pinouts are a bit different. Anyone's response with experience with these circuits is appreciated. If it matters, the customer is in the Sprint telco area.

Thanks,

Josh

[b-ulrich · Accepted solution]

Hi, yes you will need a WIC that supports a 56/64K circuit. It will not work with a T1 interface on the first channel as this carrier technology is different and as you stated the pinouts are different. If you purchased a fractional T1 with only one timeslot (64K), then you would be able to use a WIC-1DSU-T1.

The 1700 Cisco product line has many options with integrated 56/64 DSU's, however I believe they are being phased out by the 1800's. Have you thought about using ISDN? If the distance it is dialing is local, that it is a pretty good option? I would say about as stable as any other telco service delivery once you get it up and working the way you want.

[JoshGH]

Thank you for your prompt reply. It was exactly the information I needed. I provide a private WAN for my customer with a dedicated 7200 series router. We bring T1s into the router via a channelized DS3. I did not think I would be able to put the 56/64k leased line on one of those T1s, but needed to verify. I will discuss a few options with my customer, including ISDN.

Thanks!