Technical data

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HOLD (hold and retrieve a call) • [b] • • [c] •
ECT (explicit call transfer) • • [d] •
Path replacement •
Single-step call transfer (over CAPI deflection) •
AoC (advice of charge) • • •
Three-party conference • •
Large conference • •
Drop conference • •
User-to-user signaling • • •
Name identification services • [e] • [f]
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 • [g]
Call Appearance/Call Handling (CACH) plus
configuration
•
Configurable feature activators • [h]
Network display conversion/treatment •
Message waiting • • • •
Notes:
[a] In a Q.SIG environment, the feature is also called "Simple Dialog".
[b] HOLD is not a standard supplementary service for Euro-ISDN PRI, nevertheless some PBXs support call hold
and retrieve.
[c] HOLD is not defined in Q.SIG but corresponding procedures are available.
[d] Call transfer is only possible if path replacement works for one sub-PBX.
[e] Presented by switch.
[f] Presented by the network.
[g] 5ESS custom only
[h] "5ESS NI" and DMS100 only