Dialogic 4000 Series SU4.1 Uživatelský manuál stáhnout pdf (Strana 106)

Dialogic 4000 Media Gateway Series SU4.1 Reference Guide

How Call Addresses are Manipulated

Diva SIPcontrol uses routing conditions, dialplans, and address maps to manipulate call

addresses in the following way:

Note: Each step is optional, depending on the configuration.

1. Saves the inbound call addresses as "A".

2. Applies the "address map inbound" of the endpoint assigned to the call setup request

to "A", resulting in "B".

3. To check the first route: applies the number format settings of the route together

with the dialplan of the source endpoint to the call addresses "B", resulting in "C".

4. Checks the route against addresses "C". If the route does not match, Diva SIPcontrol

discards the changes and tries the next route with "B" again. For information about

routes, see Routing.

5. If the route matches, Diva SIPcontrol applies the route address map to the addresses

"C", resulting in "D".

6. After selecting one of the destinations of the route, Diva SIPcontrol normalizes the

addresses "D" using the dialplan and number format of the destination endpoint,

resulting in addresses "E".

7. Applies the outbound address map of the destination endpoint to "E", giving the

effective call addresses "F" sent to the destination.

8. If the call to the selected destination endpoint fails and there are other endpoints in

a fail-over configuration, Diva SIPcontrol starts with Step 6 again with the respective

settings of the next endpoint.

Possible Call Routing Scenarios

 At a PSTN interface, a line access digit must be prepended in order to call to the

public network, while another PSTN interface is directly connected and does not need

an access digit.

Solution: Add a regular expression to the outbound address map of the first interface.

 All calls to a number beginning with "9" shall be routed to one specific SIP peer while

removing this digit.

Solution: Manipulate the called number in the route. This way the SIP peer can also

receive calls to other numbers (via other routes) without having to deal with different

number formats.

 SIP peer "A" needs the dialed numbers to be formatted in E.164 format, while SIP

peer "B‖, which is in load-balancing or fail-over partnership with "A", needs it in an

extension-only format.

Solution: Define different number formats in the SIP peer settings.

 SIP peer "A" is located at a different location than SIP peer "B", e.g., London and

Stuttgart. Therefore, both need different location settings regarding country and area

codes, etc.

Solution: Create different dialplans and assign each dialplan to one SIP peer.

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Dialogic 4000 Series SU4.1 Uživatelský manuál Strana 106