ATT DEFINITY Communications System Generic 3V4 Instructions Manual

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Message Not Compatible with Call State (CS0/98)
The specified call at the station is not in the alerting, bridged, held state or
active state.
Resources not available (CS3/40)
The host attempted to add a seventh party to a call with six parties active
(bridging and held cases only).
Invalid number/domain (CS0/28)
The call_id contained in the request is invalid.
Mandatory Information Element missing (CS0/96)
A mandatory parameter is...

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A bridged call is answered on the bridged call appearance, providing the user is
not busy on another call, or the exclusion feature is not active for the call.
An Automatic Callback (ACB), PCOL, or TEG call is answered on a free call
appearance, providing the user is not busy on another call.
A multifunction station user can also have other call appearances with alerting,
bridged, or held calls while requesting the Third Party...

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Third Party Selective Holdbbbbbbbb
The adjunct uses this capability to place a controlled extension on hold.  The
effect is as if the specified party depressed the hold button on his or her terminal
to locally place the call on hold.  For analog sets (phones) with only one call
active, selective hold places the call on conference hold (the same as if the
switch-hook was flashed once).  For analog sets which already have a held...

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Invalid call type (CS3/43) |
The call cannot be held due to the type of call (for example, emergency, |
wakeup, or service observed).
Protocol Error (NAK) Causebbbbbbbbbbbbbbb
The switch issues the following cause for a protocol processing error:
Protocol error (CS0/111)
The Q.932 protocol has been violated or the capability invoked is not
consistent with this association.  For example, invoking a Third Party
Domain Control Request...

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Third Party Reconnectbbbbbbbb
The adjunct uses this controlling capability to reconnect a held call to a station.
Information Flowbbbbbbbbbbbbbbb
The adjunct expects a response to its request.
The switch either:
Ð Reconnects the call after validating the parameters, or
Ð Denies the request if the call_id parameter is incorrect
Third Party Reconnect Parametersbbbbbbbbbbbbbbb
call_id[mandatory]  Identifies the call to be reconnected...

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Protocol Error (NAK) Causebbbbbbbbbbbbbbb
The switch issues the following cause for a protocol processing error:
Protocol error (CS0/111)
The Q.932 protocol has been violated or the capability invoked is not
consistent with this association.  For example, invoking a Third Party
Domain Control Request over a Call Control association is inconsistent.
NOTE:
For more information regarding protocol errors and a complete list of
reason...

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Redirect Callbbbbbbbb
The adjunct uses this capability to re-route a call that is already alerting a station
extension.
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The adjunct expects a response to its request.
The switch either:
Ð Redirects the call and drops the alerting party after validating the
parameters, or
Ð Denies the request and maintains the alerting party
Domain Control Redirect Call Parametersbbbbbbbbbbbbbbb
call_id[mandatory] The...

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Miscellaneous Restrictions Ð Redirected-to Number
The redirected-to number is a Remote Access Extension, or the COR
check fails (CS3/43).
The redirected-to number cannot be the same as the originating number
or the redirecting number (CS3/42).
Miscellaneous Restrictions Ð Redirecting Number
The redirecting number is not a station extension, the call_id does
not exist, or the call is not in the alerting state or is redirecting...

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Party_ids may be re-used if the call is redirected more than once.
An application using this feature should consider the timing for redirecting a call,
particularly when redirecting away from a display user. If a display station user
gets an incoming call and the application redirects it immediately, the station user
may not have enough time to read the display (the incoming call information)
before it is cleared by the...

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Third Party Mergebbbbbbbb
The adjunct requests that two calls (already existing at the domain-controlled
station) be merged.
Information Flowbbbbbbbbbbbbbbb
The adjunct expects a response to its request.
The switch either:
Ð Validates the parameters, sends an acknowledgement to the adjunct, and
merges the two calls, or
Ð Denies the request if the parameters are invalid
Third Party Merge Parametersbbbbbbbbbbbbbbb...