Dialable Wideband Service 8-5
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
Figure 8-3
Table TRKSGRP protocol definition for PRI
TRKSGRP
element
CLLI
CARDCODE
SIGDATA
PSPDSEIZ
PARTDIAL
VERSION
CRLENGTH
BCHNEG
BCHGLARE
IFCLASS
CONFIG
LOCATION
SAT
ECSTATE
TRKGRDTM
ADJNODE
L1FLAGS
PARMNAME
PMTYPE
DTCINO
DTCICKTNO
DTCICKTTS
DCHRATE
HDLCTYPE
Indicates protocol
WBPRI
DS1SIG
ISDN
15
15
UNISPEC20
2
N
STAND
NETWORK
PT_PT
PVTNET
N
UNEQ
16
PRANODE
N
DEFAULT
DTCI
0
0
24
64K
HDLC
MCI
Signaling
When a dialable wideband call is initiated, the data can be sent over a PRI
link in the network. This data transfer can begin with an ISDN message and
end with a CCS7 message (PRI to ISUP FGD) or begin with a CCS7
message and end with an ISDN message (ISUP FGD to PRI). The message
identifies the requirements of the wideband call to the network (destination
address, number of DS-0 channels, and channel grouping). The network
transfers the data as directed by the information contained in the message.
ISDN SETUP message
The information contained in the SETUP message lets the switch know how
to handle the data transfer of the wideband call. The manner in which the
DMS-250 switch handles the data transfer is established in datafill of the
switch database.
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