Digital Access Signaling System 2 (DASS2) is a protocol defined by British Telecom for digital links to PSTN based on ISDN.
It is an improved version based on experiences with DPNSS.
... Reservation[?]
Umatilla Indian Reservation[?]
Warm Springs Indian Reservation[?]
Pyramid Lake Indian Reservation[?]
Walker River Indian Reservation[?]
Moapa River ...