Administrator's Guide

Chapter 5. How To Configure Advanced SIP
In the Matching Request-URI table, you define callees. This is used when matching re-
quests in the Dial Plan table below.
In this case, you want to define the calls that should be routed to your SIP operator, which
is call destinations where the usernames consist of numbers only, as these most likely are
intended to go to the PSTN network. Call destinations that look like [e-mail]
should not be routed via the SIP operator, but be handled by the Telecommuting Module
itself.
You can let users call international numbers with a + sign instead of the international prefix.
For this, define the + sign as a Prefix, which means that it will be stripped before the call is
forwarded.
The Min. Tail is set to 4 here, to open for the possibility of three-digit local extensions,
which should not be handled by the Dial Plan.
In the Forward To table, you define where calls should be forwarded. This is used in the
Dial Plan table below.
In this case, the calls should be forwarded to your SIP operator account that was defined
before. You select the account under Account.
The calls can also be forwarded to your SIP operator using the operator’s IP address in the
Replacement URI field.
At last, you combine these definitions in the Dial Plan table. Make one line for international
calls and one for other calls, because we need to add the international prefix for international
calls only.
63