A.K.A
PRI - a large scale terminating connection to a collection of up to 30
ISDN connections.
This connection point is physically a 32 or 46 pin serial connection, a very W I D E connector. This is usually connected at the telco end to large scale Internet transmission equipment, such as a MUXer, such as the Telstra SiteLite. Provides (based on your terminology) an A-channel connection (32x B-channels) of 1984Kbps.
You need a large scale Router to handle the resulting packet and bandwidth tranfer.