AudioCodes Mediapack mp-11x, Руководство пользователя

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Version 5.2 129 August 2007
SIP User's Manual 5. Web-based Management
Table 5-20: General Parameters (Routing Tables)
Parameter Description
Max Allowed Packet
Loss for Alt Routing [%]
[IPConnQoSMaxAllowe
dPL]
Packet loss percentage at which the IP connection is considered a failure.
The range is 1 to 20%. The default value is 20%.
Max Allowed Delay for
Alt Routing [msec]
[IPConnQoSMaxAllowe
dDelay]
Transmission delay (in msec) at which the IP connection is considered a
failure.
The range is 100 to 1000. The default value is 250 msec.
5.5.4.2 Tel to IP Routing Table
The Tel to IP Routing Table is used to route incoming Tel calls to IP addresses. This
routing table associates a called / calling telephone number's prefixes with a destination IP
address or with a Fully Qualified Domain Name (FQDN). When a call is routed through the
VoIP gateway (Proxy isn't used), the called and calling numbers are compared to the list of
prefixes in the IP Routing table (up to 50 prefixes can be configured); Calls that match
these prefixes are sent to the corresponding IP address. If the number dialed does not
match these prefixes, the call is not made.
When using a Proxy server, you do not need to configure the Tel to IP Routing Table.
However, if you want to use fallback routing when communication with Proxy servers is
lost, or to use the 'Filter Calls to IP' and 'IP Security' features, or to obtain different SIP URI
host names (per called number) or to assign IP profiles, you need to configure the IP
Routing Table.
Note that for the Tel to IP Routing table to take precedence over a Proxy for routing calls,
set the parameter PreferRouteTable to 1. The gateway checks the 'Destination IP Address'
field in the 'Tel to IP Routing' table for a match with the outgoing call. Only if a match is not
found, a Proxy is used.
Possible uses for Tel to IP Routing include the following:
„ Can fallback to internal routing table if there is no communication with the Proxy
servers.
„ Call Restriction (when Proxy isn't used): rejects all outgoing Tel Æ IP calls that are
associated with the destination IP address: 0.0.0.0.
„ IP Security: When the IP Security feature is enabled (SecureCallFromIP = 1), the VoIP
gateway accepts only those IP
Æ
Tel calls with a source IP address identical to one of
the IP addresses entered in the Tel to IP Routing Table.
„ Filter Calls to IP: When a Proxy is used, the gateway checks the Tel Æ IP Routing table
before a telephone number is routed to the Proxy. If the number is not allowed
(number isn't listed or a Call Restriction routing rule is applied), the call is released.
„ Always Use Routing Table: When this feature is enabled (AlwaysUseRouteTable = 1),
even if a Proxy server is used, the SIP URI host name in the sent INVITE message is
obtained from this table. Using this feature, users are able to assign a different SIP
URI host name for different called and/or calling numbers.
„ Assign Profiles to destination address (also when a Proxy is used).