H3C Technologies H3C MSR 50 - Manual (Page 684)

299
Item Description
Registration Percentage To ensure the validity of registration information of a local number or an SIP trunk
account on the registrar, the local number or SIP trunk account must re-register with
the registrar at a specified time before the registration expiration interval is
reached. You can set the registration percentage or lead time before registration to
set the time when the local number or SIP trunk account re-registers with the
registrar.
• Time is registration expiration interval multiplied by expiration percentage.
When the time is reached, the local number or SIP trunk account re-registers
with the registrar.
• Time is registration expiration interval minus lead time before expiration. When
the time is reached, the local number or SIP trunk account re-registers with the
registrar.
You can configure both timers. In this case, the actual re-registration time is
decided by the timer that expires first. In other words, the local number or SIP trunk
account tries to re-register with the registrar when any one of the two timers
expires.
Lead Time Before
Registration
Redundancy Mode
• Parking—The SIP trunk device sends the OPTIONS or REGISTER message to the
current server. When the current server is not available, the SIP trunk device
selects the member server with the second highest priority in the SIP server
group as the current server even if the original current server recovers. Before the
parking mode is applied, you must set OPTIONS or REGISTER as the keep-alive
mode on the page that can be accessed by selecting Voice Management > Call
Connection > SIP Server Group Management from the navigation tree.
• Homing—The SIP trunk device sends the OPTIONS messages to both the
current server and the member server with the second highest priority in the SIP
server group. When the current server is not available, the SIP trunk device
selects the member server with the second highest priority as the current server.
Once the original current server recovers or a server with a higher priority than
the current server is available in the SIP server group, the SIP trunk device selects
the original current server or the server with the highest priority as the current
server. Before the homing mode is applied, you must set OPTIONS as the
keep-alive mode on the page that can be accessed by selecting Voice
Management > Call Connection > SIP Server Group Management from the
navigation tree.
By default, parking mode is applied.
Carry VCX Authentication
Information
• Enable—Configure the Contact header fields of the REGISTER messages to
contain the dt parameter. This option is used when the device communicates
with a VCX device.
• Disable—Configure the Contact header fields of the REGISTER messages not to
contain the dt parameter.
By default, the Contact header fields of the REGISTER messages do not contain the
dt parameter.