Welltech Dialogic SS7 Protocols ISUP - Manual (Page 172)

Appendix A: ISUP National Variants
172
A.2 UK ISUP
UK ISUP Specification: PNO-ISC Specification Number 007 ISDN User Part
(ISUP)
Configuration and options
In order to use this feature, ISPGVAR_UK must be set in the ‘variant’ field in
the Configure Circuit Group Request message (see Section ). 8.2 on page 126
For UK ISUP, set the circuit group options as recommended for the ‘ETSI’
variant (refer to Appendix D: ISUP Configuration Option Settings on page
193 ). In addition to these recommended option settings, the
ISPX1GOP_T33EXP_NOREL circuit group option (bit 2 in the ‘more extended
options’ field) applicable only to UK ISUP must also be set. When set, this
will prevent the call from being released on expiry of timer T33 (wait for INF
after sending INR).
Parameters
When this variant is selected, the following UK ISUP specific parameters may
be used:
Parameter Value
UK ISUP API
Length Parameter
Name
Hex Dec Hex Dec
Mandatory/
Optional
Parameter
Min Max
Message
used
Comments
Called
subscriber’s
basic service
marks 0xfa 250 0xd0 208 Optional 3 3 ACM,
ANM,
CPG,
CON, INF
Called
subscriber's
terminating
facility marks 0xf7 247 0x1f7 503 Optional 2 2 INF
Calling
subscriber's
basic service
marks 0xf9 249 0xd1 209 Optional 3 3 INF
Calling
subscriber’s
originating
facility marks 0xf8 248 0xdb 219 Optional 2 2 INF
Last diverting
line identity 0xfc 252 0x1fc 508 Optional 2 18 IAM
National
information
indicators 0xf5 245 0xdc 220 Optional 2 2 INF
National
information
request
indicators 0xf6 246 0xdd 221 Optional 2 2 INR
Presentation
number 0xfd 253 0xde 222 Optional 2 18 IAM
National
forward call 0xfe 254 0xf6 246 Optional 2 2 IAM Used to convey the
CLI Blocking