Reference Guide
ZCOM Tables and Data Structures
Physical Terminal Tables
Chapter 3 69
PTTXLA Pointer to next PTT on high priority
list
pointer 8
PTTXQA High priority transmit buffer queue struct 56
PTTXLB Pointer to next PTT on low priority
list
pointer 8
PTTXQB Low priority transmit buffer queue struct 56
PTTXQC Unacknowledged transmit buffer
queue
struct 56
PENDG_TXREQ Next request for $DATA struct 56
PTPZLK ZLU of next PTT on this port uns.short 2
PTDRST Driver terminal status uns.short 2
PTFWST Firmware terminal status uns.short 2
PTTYPE Physical type of terminal uns.short 2
SCFG_LEN Length of special configuration uns.short 2
SPEC_CFG Special protocol configuration uns.char[6] 6
Table 3-11 Physical Terminal Tables (System Area) (Continued)
Field Name Field Description Field Type
Size
(Bytes)
Table 3-12 Physical Terminal Tables (User Maintainable Area
PTUSER)
Field Name Field Description Field Type Size (Bytes)
PTPOLL Terminal poll address uns.short 2
PTSLCT Terminal select address uns.short 2
PTOPTN Protocol options uns.short 2
PTVCNO X.25 logical channel number uns.short 2