AASTRA SIP-DECT (Release 2.1)- OM System Manual - Installation, Administration and Maintenance EN - Manual (Page 39)

SIP – DECT OM System Manual Release 2.1 5 OMM Web Service
depl-1230/1.3 Page: 39 (196)
- BOTH
DTMF telephones events are send according to RFC 2833 and as well as SIP INFO
method. Note: Possibly, the other party recognizes events twice.
• Payload Type : If the Out-of-Band option is enabled, this setting specifies the payload
type which is used for sending DTMF events based on section 1.3 reference /14/.
Registration traffic shaping
Allows to limit the amount of simultaneous SIP registrations at startup/fail over of the OMM. If
activated, it prevents bursts of SIP registration during startup/fail over of the OMM.
• Active : The registration traffic shaping mechanism can be switched off/on herewith.
• Simultaneous Registrations : The maximum number of simultaneously started
registrations.
• Waiting time : The waiting time between a registration finish and starting the next
registration in ms (0-1000ms).
Notes on Call forwarding / Diversion
The handset user can (de)activate call forwarding/diversion in the OMM via menu.
In some installations the implemented call forwarding/diversion feature in the IPBX system is
in conflict with the OMM based call forwarding/diversion. Thus, the OMM based call
forwarding/diversion can be deactivated to let menu on the handset disappear. This setting
becomes active on handsets with the next DECT “Locating Registration” process (Can be
forced by switching the handset off and on again). An already activated call forwarding is
ignored if the call forwarding feature is deactivated.
Notes on Local line handling
In some installations the implemented multiple line support in the IPBX system is in conflict
with the OMM based multiple line support. Thus, the OMM based multiple line support can
be deactivated. Note, that the OMM based multiple line support is active by default.
A deactivation of the “Local line handling” flag results in the following implications:
• Only one line is handled for each user (exceptional SOS call 1 )
• If a user press the “R” key or hook-off key in a call active state a DTMF event is send to
the IPBX via SIP INFO including signal 16 (hook-flash). All Hook-flash events are send in
every case via SIP INFO independently from the configured or negotiated DTMF method
during call setup. All other key events are send via configured or negotiated DTMF
method.
• The OMM based call features “Call waiting”, “Call Transfer”, “Brokering” and “Hold” are
not any longer supported.
• This setting becomes active on handsets with the next DECT “Locating Registration”
process (Can be forced by switching the handset off and on again).
1 The OM SOS call feature is unchanged. The initiation of a SOS call in call active state
result in the creation of a new line which handles the SOS call.