AdminGuide:Service:OutboundRouting

Return to AdminGuide:Service

This section details all the settings needed to set up a way to make calls to external numbers.

Outbound routing classes

An outbound routing class is a set of outbound routing rules to be verified in order to establish a routing policy applied to a call from an extension to an external number. The rules are matched in the same order as they are shown in the GUI, from top to bottom.

If the match is valid, the corresponding action will be executed and no further rule will be examined. For this reason it is essential that the rules are arranged from the most particular to the most general. Therefore, it would be wrong to dispose first a general rule that, for example, allows to call all numbers without distinction, since this would lead to the cancellation of all the others that potentially contain particular differentiating features.

You can reorder the rules by clicking and dragging the corresponding icon to the desired place.

The following table lists the configurable parameters for each outbound routing class.

Parameter	Description	Value
-
Enabled	Lets you disable an outbound routing class without losing its configuration.	Yes / No
Name	Outbound routing class identifier.	Alphanumeric
Outbound routing class rules
Add rule	Lets you select the configured outbound routing rules and insert them in the order in which they will be checked by the PBX.	Outbound routing rule

Outbound routing rules

And outbound routing rule has two components.

• A set of conditions on the called number. The verification may be carried out on a specific phone number ("exact selection") or on a prefix ("prefix"), or else the rule may be validated on any called number ("Any").
• An ordered list of outbound lines on which the PBX will attempt to route the call. Should an error occur on the first outbound line, the PBX will attempt to route the call on the next. The error conditions correspond to a 5xx or 6xx SIP message or a SIP timeout (32 seconds by default). For example, if the PBX receives a 486 Busy Here SIP message, it will make no further attempts to route the call to the next lines.

The following table lists the configurable parameters for each outbound routing rule.

Parameter	Description	Value
-
Enabled	Lets you disable an outbound routing rule without losing its configuration.	Yes / No
Name	Outbound routing rule identifier.	Alphanumeric
Outbound routing rule selection
Add selection	Specifies how to match the called number.	Prefix / Exact / Any
ENUM resolution
Enable ENUM resolution	Lets you enable ENUM resolution for a specific rule.	Yes / No
Add ENUM setting	Lets you specify which search domains (defined in the ENUM settings) must be verified.	ENUM settings
Outbound lines
Add outbound line	Lets you create a list of outbound lines to use for matched selections.	Outbound lines

ENUM settings

An ENUM setting has two components.

• A set of search domains on which to make DNS queries.
• A list of rules to apply if the ENUM server gives a positive response. The behavior may be different depending on the hostname returned in the SIP URI.

Parameter	Description	Value
-
Enabled	Lets you disable an ENUM setting without losing its configuration.	Yes / No
Name	ENUM setting identifier.	Alphanumeric
Search domains
Add search domain	Lets you specify which search domains must be verified for this setting.	Domain name
ENUM rules
Add ENUM rule	Lets you specify a rule to use for outbound call routing if the DNS query on a search domain has a positive result. The outbound line can coincide with the domain returned by the query (direct call to the domain); it is also possible to force a specific outbound line for on-net routing (for example, when it is necessary to use authentication credentials).	Hostname + outbound line / direct call to domain

Fr a detailed description of this type of routing, please see the ENUM service page.