Reference Guide

ZCOM Tables and Data Structures
Physical Terminal Tables
Chapter 3 71
This field contains the firmware terminal number this terminal ZLU is
associated with. The firmware manages terminals using a terminal
number while the ZCOM subsystem manages terminals using ZLUs on
the host. On 2/8-channel cards, the terminal number must be unique for
a given port. On E1/T1 cards, the terminal number is unique per card.
SUBCH - Subchannel number within port
This field contains the subchannel this terminal ZLU is configured on. If
the card does not support subchannels, this field is set to zero.
PTZPRCVR - ZCOM address of primary receiver
Node number, ZLU, and checksum used as the destination address for
normal messages and unsolicited status messages received for this
physical terminal. This field is set by the zset_rcvr call (mode 0 or mode 1
if multiplexed terminal).
PTZPCTL_RCVR - ZCOM address of primary control receiver
This is the node number, ZLU, and checksum used as the destination
address for any control input messages received for this terminal. This
field is set by a zset_rcvr mode 3 call. The control input messages are
distinguished by the protocol modules on the MUX, by setting bit 1 of the
input message tag byte.
PTZSHRCVRS - Pointer to a linked list of shared receivers
This field contains a pointer to a linked list of programs that wish to
receive normal messages and unsolicited status messages from this
physical terminal. Each entry in the linked list contains the node
number, ZLU, and checksum of the application which will be used as the
destination address for normal messages and unsolicited status
messages received from this physical terminal. This field is set by the
zset_rcvr call (mode 0 or mode 1 if multiplexed terminal). If there are no
shared receivers, this field will contain a zero. When a data or status
message arrives, it will be delivered to each application in the linked list
(as well any primary receiver).
PTZSHCTLRCVRS - Pointer to a linked list of shared control receivers
This field contains a pointer to a linked list of programs that wish to
receive control messages from this physical terminal. Each entry in the
linked list contains the node number, ZLU, and checksum used as the
destination address for any control input messages received for this
terminal. This field is set by a zset_rcvr mode 3 call. The control input
messages are distinguished by the protocol modules on the MUX, by