Reference Guide

ZCOM Tables and Data Structures
Interface Table
Chapter 3 93
ISUBCH_BUF - Port subchannel configuration buffer (subchbuf_def)
This array contains the subchannel configuration bytes for each port on
the ACC E1/T1 4-port Mux card. The Subch statements in the
Subchannel-Definition section of the TTGEN configuration file are used
to define the initial values of this array. Each element of the array is
associated with a single port on the Mux card. Each element can be
dynamically configured by calling the zconfig routine. The structure
layout is as shown in Table 3-21.
Where:
Each element of the timeslot array has the structure shown in
Table 3-22.
Table 3-21 Port Subchannel Configuration Structure
Field Name Field Description Field Type
Size
(Bytes)
tmsl Timeslot assignment array uns.int[32] 32*4
spec Subchannel specification array uns.int[32] 32*4
Table 3-22 Timeslot Array Element Structure
31-30 29 28-24 23-16 15-14 13 12-8 7-0
spare TTI TxSubch TxFill spare RTI RxSubch RxFill
TTI - Transmit Timeslot Inhibit
TxSubch - Transmit subchannel number
TxFill - Transmit fill mask
RTI - Receive Timeslot Inhibit
xclock - Clock multiplier
RxSubch - Receive subchannel number
RxFill - Receive fill mask
spare - Reserved, not used (must be 0)