Panasonic T-1 Interface Card(Model # VB-44550)
The T-1 can be set to support either 8, 16, or 24 channels.
Unlike most other cards, due to the interaction between card slots, the T-1 card must be installed in selected flexible card slots. With the HD's new high-density design, no other neighboring slots are restricted when this card is installed.
The T-1 interface requires a DSU or CSU for connection to the carrier circuit. A Network Sync card is also required.
Model # VB-44460 Panasonic Network Synchronizing Unit - SYNC$262.73