We are currently getting ready to install a new voice gateway (quintum) to our parent company. We currently have a trunk setup to go to our parent company. I was asked what kind of signal we were using, I believe it is a T1, but was asked what kind of t1 (T1 CAS, etc). How can i look into our system and see what kind of t1 we are using. We have a 1000m system. Let me know if more information is needed. thanks.