Patton Part #              Digi Part #

2977/B4/ST              77000605 4 BRI ISDN Ports with ST I/F (International)

2977/B4/U                77000606 4 BRI ISDN Ports with U I/F (North America)

2977/24/PT1             77000593 24 Port RAS Card, Single T1 WAN

2977/48/PT2             77000597 48 Port RAS Card, Dual T1 WAN

2977/30/PE1             77000599 30 Port RAS Card, Single E1 WAN

2977/60/PE2             77000603 60 Port RAS Card, Dual E1 WAN

2977/24/PTM            77000594 24 Port Daughterboard, Upgrades 24 Port RAS to 48 Ports

2977/30/PEM            77000600 30 Port Daughterboard, Upgrades 30 Port RAS to 60 Ports