You can do a lot with a DS1, but the equipment you are using must have the capability to utilize the services! The Partner was not designed for DID service. It is offered currently only in the CAS format DS1 service, and is very limited by the Dial Plan as mentioned previously. You might want to post a description of what you are trying to accomplish, and we can suggest and/or advise some choices. It may be the Partner is not want you want to use.
....JIM....