Cisco Cisco Expressway 维护手册
These search rules ensure that both the E.164 number and full URI are searched for, so that endpoints can still be
reached whether they have registered with an H.323 ID (
reached whether they have registered with an H.323 ID (
123abc
) or a full URI (
123abc@domain
).
■
The first search rule takes any aliases in the format
string@domain
and transforms them into the format
string
.
■
To ensure that any endpoints that have actually registered with an alias in the format
string@domain
can also
still be reached, the lower-priority second search rule places calls to
string@domain
without transforming the
alias.
Allowing Calls to IP Addresses Only if They Come From Known Zones
In addition to making calls to aliases, calls can be made to specified IP addresses. To pass on such calls to the
appropriate target zones you must set up search rules with a Mode of Any IP address. To provide extra security you
can set the rule's Source option to All zones. This means that the query is only sent to the target zone if it originated
from any configured zone or the Local Zone.
appropriate target zones you must set up search rules with a Mode of Any IP address. To provide extra security you
can set the rule's Source option to All zones. This means that the query is only sent to the target zone if it originated
from any configured zone or the Local Zone.
To achieve the example described above, from the Create search rule page (Configuration > Dial plan > Search
rules > New) set up a search rule as follows:
rules > New) set up a search rule as follows:
Field
Value
Rule name
IP addresses from known zones
Description
Allow calls to IP addresses only from a known zone
Priority
100
Source
All zones
Request must be
authenticated
authenticated
No
Mode
Any IP address
On successful match Continue
Target zone
Overseas office
State
Enabled
Configuring Search Rules to Use an External Service
The configuration process to set up the Expressway to use an external policy service for search rules (dial plan) is
broken down into the following steps:
broken down into the following steps:
■
Configure the policy service to be used by search rules.
■
Configure the relevant search rules to direct a search to the policy service.
Configuring a policy service to be used by search rules
1.
Go to Configuration > Dial plan > Policy services.
2.
Click New.
3.
Configure the fields on the Create policy service page as follows:
Field
Description
Usage tips
Name
The name of the policy service.
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Cisco Expressway Administrator Guide
Dial Plan and Call Processing