- Device/ board error
The goal is, to reach the called subscriber either with its mobile phone
number, with an alternate number, via PSM or to lead the call to attendant,
voice mail, phonemail or something else.
- Manual deactivated (by AMO) with activated authorization for alternate
routing
If subscribers are manually deactivated by AMO command, alternate routing will only
be performed,
if the subscribers are authorized for requesting alternate routing when called after
a
manual deactivation.
The goal are identical as for device/ board errors.
- APE situation between APs of calling device and called subscriber/ personal attendant.
In case of an APE situation between APs of calling device and called
subscriber/personal_attendant, the involved APs act as single switches.
The goal is, to reach the called subscriber in its AP via public trunk
access. As a precondition, a public trunk access has to be administered
between the related APs with routing elements without internal rerouting
possibilities.
Routing elements, that are defined as with internal rerouting, will
not be used for alternate routing on error in general.
- Deregistered HFA IP phones (OpenScape 4000 --> OpenScape Business/HiPath
3000).
Special authorized HFA IP phones can move their logon location from
OpenScape 4000 to OpenScape Business/HiPath 3000 in case of IP errors.
The goal is, to reach this HFA IP phones in their new logon location
via public trunk access under their individual (modified) extension numbers.
TSC setups with service MWI to a unregistered HFA IP subscriber will
be alternate routed to that switch, where the HFA IP phone is actually
registered.
This is a special usage of the feature, as in this scenario, alternate
routing only will be started, if the administered alternate routing destination
number points to a tie trunk (no public trunk).
The reason for this is, that it is not possible to transport a MWI
service via public network.
- Deregistered HFA IP phones (OpenScape 4000 --> OpenScape 4000).
HFA IP phones are normally registered at a OpenScape 4000 node with
Xpressions. Special authorized HFA IP phones can move their logon location
from OpenScape 4000 to another OpenScape 4000 node in case of system
failure.
The goal is, to reach this HFA IP phones in their new logon location
via tie trunk access under their individual (modified) extension numbers
and the HFA IP phones will be supplied with MWI update information
of the Xpressions server.
The MWI led will be switched on or switched off at the HFA subscriber.
The HFA subscriber now has the possibility to call the Xpression server
from the alternate OpenScape 4000 via tie trunk access in order to pick
up its voice messages.
If the HFA subscriber has different numbers in default node and alternate
node, it may be necessary to use the mailbox number of the default node
also when picking up the voice messages out of alternate node.
Alternate Routing on Error via tie trunks to another OpenScape 4000
should be used very restrictive. Furthermore, the administration should
only be done subscriber individual and not source group related.
