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Technical Bulletin
SoundPoint
®
IP, SIP 2.1
7
2. Do not use OutBoundProxy configurations on the phone if the
OutBoundProxy could be unreachable when the fallback occurs.
SoundPoint IP phones can only be configured with one OutBoundProxy
per registration and all traffic for that registration will be routed through
this proxy for all servers attached to that registration. If Server 2 is not
accessible through the configured proxy, call signaling with Server 2 will
fail.
3. Avoid using too many servers as part of the redundancy configuration as
each registration will generate more traffic.
4. Educate users as to the features that will not be available when in
“fallback” operating mode.
Configuration File Changes
Configuration changes can performed centrally at the boot server:
Protocol in Application Configuration File
The
<voIpProt/>
attribute includes:
• Server <server/> on page 7.
Server <server/>
This configuration attribute now includes:
Central
(boot server)
Configuration file: sip.cfg Specify global primary and fallback server configuration
parameters.
• For more information, refer to Protocol in Application
Configuration File on page 7.
Configuration file:
phone1.cfg
Specify per registration primary and fallback server configuration
parameters values that override those in sip.cfg.
• For more information, refer to Registration in Per-Phone
Configuration File on page 8.
Attribute Permitted Values Default Interpretation
voIpProt.server.x.lcs 0, 1 0 This attribute overrides the
voIpProt.SIP.lcs
.
If set to 1, the proprietary “epid”
parameter is added to the From field
of all requests to support Microsoft
Live Communications Server.