Mitel Deutschland GmbH 68635RFP36U-01 Manuale Utente
SIP-DECT OM System Manual
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Additionally, the cipher key used for encryption during an ongoing call is changed every 60 seconds.
Finally, every connection is encrypted immediately upon establishment to protect the early stages of the
signaling such as dialing or CLIP information.
signaling such as dialing or CLIP information.
DECT enhanced security is only supported with Mitel 602 DECT phones. Older terminals (e.g. 6x0d or
142d) or GAP phones still operate as normal, but do not support the new security mechanisms.
142d) or GAP phones still operate as normal, but do not support the new security mechanisms.
3.6 SIP OVER UDP/TCP/TLS
In addition to UDP, SIP-DECT also supports TCP and TLS as transport protocols for SIP signaling. The
OMM provides the following transport protocol modes:
OMM provides the following transport protocol modes:
•
UDP: all SIP messages are sent/received via UDP
•
TCP: all SIP messages are sent/received via TCP
•
UDP/TCP: all outgoing connections are always set up via TCP, but incoming SIP messages are also
accepted when sent over UDP
•
TLS: all SIP messages are sent/received via TLS connections
•
Persistent TLS: all SIP messages are sent/received over TLS connections. The OMM tries to keep
the connection to the SIP server open permanently.
3.7 SIP MULTIPORT
Some call server platforms (e.g. Cisco CUCM) and internet telephony provider environments (SBCs) do
not accept SIP registration from different users who have the same IP address and port, but require a
unique source signaling port for every SIP extension. By default, the OMM uses one source port for all
extensions, but does allow the configuration of individual local signaling ports for users and conference
rooms.
not accept SIP registration from different users who have the same IP address and port, but require a
unique source signaling port for every SIP extension. By default, the OMM uses one source port for all
extensions, but does allow the configuration of individual local signaling ports for users and conference
rooms.
The port range is set per protocol (i.e., UDP/TCP and TLS), and must not overlap with other ports in use.
The following parameters can be configured or read per user (see section 6.10.4) and conference room:
•
Fixed port: Port used explicitly for SIP signaling. If set to 0, an automatically calculated port is used
for this user or conference room. The default is 0.
•
Calculated port: a read-only parameter whose calculation is based on the internal user or conference
room ID and a configurable port range, in a way that all users or conference rooms are spread over
the range.
the range.
The calculation is based on the following rules:
UserPortCount = UserPortRangeStart - UserPortRangeEnd + 1
UserPort = ((UserID – 1) % UserPortCount) + UserPortRangeStart
UserPort = ((UserID – 1) % UserPortCount) + UserPortRangeStart
ConfRoomPortCount = ConfRoomPortRangeStart - ConfRoomPortRangeEnd + 1
ConfRoomPort = (ConfRoomID % ConfRoomPortCount) + ConfRoomPortRangeStart
The “Calculated port” is first updated with the SIP registration of the user or conference room.
Depending on the “Register Traffic Shaping” settings and the number of users/conference rooms, the
update may take some time.
Depending on the “Register Traffic Shaping” settings and the number of users/conference rooms, the
update may take some time.
The port ranges used for the port calculation can be configured globally for all SIP DECT users and
conference rooms via the OMP (see section 6.5.4.1).
conference rooms via the OMP (see section 6.5.4.1).