ZyXEL Communications Prestige 792H User Manual page 281

Prestige 792H User's Guide
In this case, only one set of VPI and VCI numbers need be specified for all protocols. The valid range for
the VPI is 0 to 255 and for the VCI is 32 to 65535 (1 to 31 is reserved for local management of ATM
traffic).
Remote Node Configuration 24-11