UM380 03 010
61
Manual Configuration or Upgrade of Software Protocol Options
To manually change the facility coding definition it is necessary to make changes in two
distinct menu trees, the Q931 CUST (Q.931 customer specific configuration) menu and the
IWRK (Service Interworking) menu
Q.931 CUST menu
From the ADV level menu:
1 Select
Q931
,
2 Select
SRVC
,
3 If asked Facility Element Coding (ISO/ETSI/ECMA) ? input the required selection
(ECMA = ETSI 1993, ETSI = ETSI 1995),
If this question is not asked, you have not enabled any Supplementary Services
that require use of these encodings.
4 EXIT back to the ADV menu to perform the next step in facility configuration.
IWRK menu
From the ADV level menu:
5 Select
IWRK
,
6 Select
SRV
,
7 Select
FAC
,
8 Select
ISO
if you need either the ISO 1994 or the ETSI 1995 definition, or
ETSI
for
the ECMA 1993 definition,
9 EXIT back to the ADV menu to perform the next step in facility configuration.
Please beware the discrepancy between meanings of the
ETSI
selection in the two different
menu trees.
We suggest you contact your Q.931 equipment supplier if one or more Supplementary
services will not interoperate with InterChange’s default ETSI (1995) encoding and you
suspect the Q.931 equipment may be operating to an alternative standard. With some PBX
equipment, more service capabilities are available with the PBX configured for ECMA (1993)
rather than ISO operation.
6.5.6 QSIG Diversion Restriction
QSIG diversion restriction is an optional interworking feature, introduced at
InterChange iQ 2000 release R2.0.5.
Certain DPNSS PBXs enforce an arbitrary constraint which prohibits a network user from
diverting the ‘phone to an off-net number (e.g. to a national mobile number). In a mixed
network including such PBXs, the feature permits those QSIG PBXs which are capable of
performing ‘call forward by join’ to offer off-net diversion without the diversion request being
referred back to and rejected by the DPNSS PBX.