AASTRA SIP-DECT (Release 2.1)- OM System Manual - Installation, Administration and Maintenance EN - Manual (Page 37)

SIP – DECT OM System Manual Release 2.1 5 OMM Web Service
depl-1230/1.3 Page: 37 (196)
The following parameters can be set:
Basic settings
• Proxy server : IP address or name of the SIP proxy server. If a host name and domain are
used for the proxy server parameter, ensure that a DNS server and a domain are
specified for your SIP – DECT system via DHCP or the OM Configurator tool.
• Proxy port : SIP proxy server’s port number. Default is 5060. To enable DNS SRV support
for proxy lookups, use a value of “0” for the proxy port.
• Registrar server : IP address or name of the SIP registrar. Enables the PPs to be
registered with a Registrar. If a host name and domain are used for the proxy server
parameter, ensure that a DNS server and a domain are specified for your SIP – DECT
system via DHCP or the OM Configurator tool.
• Registrar port : SIP Registrar’s port number. Default is 5060. To enable DNS SRV
support for registrar lookups, use a value of 0 for the registrar port.
• Registration period : The requested registration period, in seconds, from the registrar.
Default is 3600.
Advanced settings
• Outbound proxy server : This setting is optional. You can enter the address of the
outbound proxy server in this field. All SIP messages originating from the OMM are sent to
this server. For example, if you have a Session Border Controller in your network, then
you would normally set its address here.
• Outbound Proxy Port : The proxy port on the proxy server to which the OMM sends all
SIP messages. This setting is optional.
• Explicit MWI subscription : Some Media Server such as the Asterisk support Message
Waiting Indication (MWI) based on /20/. An MWI icon will be presented on an Aastra
DECT 142 Handset / Aastra 142d if the user has received a voice message on his voice
box which is supported by the Media Server. If
Explicit MWI subscription is enabled, the
OMM sends explicit for each PP an MWI subscription message to the Proxy or Outbound
Proxy Server.
• User agent info : If this option enabled, the OMM sends information on his version inside
the SIP headers User-Agent/Server.
• Dial terminator : The dial terminator is configurable (up to 2 characters; “0” – “9”, “*”, “#”
or empty). The default dial terminator is “#”.
• Registration retry timer : Specifies the time, in seconds, that the OMM waits between
registration attempts when the registration is rejected by the registrar. A dial terminator is
necessary if digit treatment shall be applied on outgoing calls and overlapped sending is
used.
• Transaction timer : The amount of time in milliseconds that the OMM allows a call server
(proxy/registrar) to respond to SIP messages that it sends. If the OMM does not receive a
response in the amount of time designated for this parameter, the OMM assumes the
message as timed out. In this case the call server is recorded to the blacklist. Valid values
are 4000 to 64000. Default is 4000.
• Determine remote party by … header : The SIP header can be selected from which the
remote party information (user id and display name) should be determined. If “P-Asserted-
Identity” is selected but no such header is received a fallback to the mandatory “From or
To” header will be done. This feature can be configured by choosing one of the two
values: