Eicon Networks V8.3 manual 71

				5ESS Custom
				(AT&T),
				5ESS NI
Supplementary services	Euro-ISDN	Euro-ISDN		(Lucent/Avaya),
with switch type	(ETSI) PRI	(ETSI) BRI	Q-Sig	DMS 100
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)

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’.

Features 71