AudioCodes 405HD, Руководство администратора

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Administrator's Manual 5. Configuring VoIP Settings
Version 3.4.3 65 400HD Series IP Phones
Parameter Description
voip/signalling/sip/redundant_proxy/
port
Only displayed if the 'Redundant Proxy Mode' parameter is
enabled (Primary-Fallback)
Defines the UDP or TCP port of the backup redundant
proxy server. If occupied by other enterprise devices, you
can configure another.
Range: 1024 to 65535. Default = 5060.
voip/signalling/sip/redundant_proxy/
symmetric_mode
Only displayed if the 'Redundant Proxy Mode' parameter is
enabled (Primary-Fallback)
The phone identifies cases where the primary proxy does
not respond to SIP signaling messages. In these
scenarios, the phone registers to the redundant proxy and
the phone seamlessly continues normal functionality,
without the user noticing any connectivity failure or
malfunction with the primary proxy.
0
= Asymmetric (default). In this mode, the primary proxy is
assigned a higher priority for registration than the
redundant proxy. Once the phone is registered to the
primary proxy, it sends keep-alive messages (using SIP
OPTIONS messages) to the primary proxy. If the primary
proxy does not respond, the phone registers to the
redundant proxy, but continues sending keep-alive
messages to the primary proxy. If the primary proxy
responds to these keep-alive messages, the phone re-
registers to the primary proxy. Therefore, the phone
assigns the primary proxy a higher priority for registration.
If asymmetric mode is configured and the primary server
goes down, an attempt will be made to revert to the
primary server.
1 = Symmetric. In this mode, both proxies are assigned the
same priority for registration. Once the phone is registered
to a proxy, it sends keep-alive messages to this proxy. The
phone switches proxies only once the proxy to whom it has
registered does not respond. Therefore, the phone assigns
both proxies the same priority for registration. If symmetric
mode is configured and the primary server goes down,
you'll operate with the redundant proxy without ever
reverting to the primary unless the redundant proxy also
goes down.
In both modes, the following applies:
If the phone is not registered (i.e., if the proxy server –
redundant or primary – to which the phone currently tries to
register does not respond), the phone attempts to register
to an alternative proxy. These attempts continue until the
phone successfully registers.
If this feature is enabled and the user reboots the phone,
the phone registers to the last proxy to which it was trying
to register, and not necessarily to the primary proxy.