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ASAI and Feature Interactions
Issue 7 May 1998
12-47
Advice of Charge (AOC)
Starting with R5: In Germany and France, the public network does not cut through
the voice path to an incoming B-channel until an ISDN-PRI CONNECT message
is received from the called party. Thus, it is not advisable to route incoming
ISDN-PRI calls over non-ISDN trunks without first providing answer supervision to
the call (for example, wait, hearing music, call vector step).
Germany
The cause values sent by the network and expected from the user in the 1TR6
network are completely different from those defined by the CCITT (and used by
ASAI). Therefore, in order to provide consistency, DEFINITY ECS will map those
cause values received from the 1TR6 network to the most similar CCITT cause
values.
The 1TR6 network does not provide the connected party number, and therefore
the Alerting and Connected Event Reports will not contain this information for
outgoing calls in Germany.
France (VN4)
The VN4 network generates several cause values coded as ITU-T/ETSI that are
not supported by DEFINITY ECS.
Europe (ETSI)
The AOC feature includes two types: AOC-D and AOC-E. AOC-D provides
charge information periodically throughout the call and also at the end of the call.
AOC-E provides charge information when the call is disconnected.
Using AOC-D or AOC-E, it is possible that the network could be optioned to send
currency instead of charging units. If this occurs, DEFINITY ECS will pass
currency units to the adjunct without any indication that an option change
occurred.
Last Number Dialed
The called party address (dest_addr) provided in a Third Party Make Call or Third
Party Auto Dial capability is the last number dialed for the calling party (orig_addr)
until the next call origination from the calling party. Therefore, the user can use the
“last number dialed” button to originate a call to the destination provided in the last
Third Party Make Call or Third Party Auto Dial capability. This does not apply to
switch-classified calls.