
Features
page 55
1)
HOLD is not a standard supplementary service for Euro-ISDN PRI, nevertheless some PBXs support call hold and retrieve.
2)
HOLD is not defined in Q.SIG but corresponding procedures are available.
3)
Call transfer is only possible if path replacement works.
4)
In a Q.SIG environment, the feature is also called "Simple Dialog".
Three-party conference • •
Large conference • •
Drop conference • •
Name identification services •
(presented by
switch)
•
(presented by
network)
Generic functional procedures (basis for
supplementary services in Q-Sig environment)
•
Common information •
Redirected number translation from Q-Sig to Q.931 •
Escape message types •
(5ESS Custom
only)
Call Appearance/Call Handling (CACH) plus
configuration
•
Feature activators plus configuration •
(5ESS NI + DMS
100 only)
Network display conversion/treatment •
Message waiting • • • •
CCBS (call completion to busy subscriber) • •
CCNR (call completion on no reply) • •
Supplementary services with switch type
Euro-ISDN
(ETSI) PRI
Euro-ISDN
(ETSI) BRI Q.SIG
5ESS Custom
(AT&T),
5ESS NI
(Lucent/Avaya),
DMS 100
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