AASTRA DT4x3 for MX-ONE User Guide EN - Manual (Page 38)

1424-EN/LZT 103 089 Uen D 2010-02-12 38
O UTGOING C ALLS
This is necessary in order to sign on to the third party set.
3. Press .
4. Enter your password.
5. Press to terminate the access to the service.
You may proceed with placing your external call in substitution from
the previous extension.
6. Dial the desired external number.
7. Press to make the call.
6.7 Least Cost Routing
Usually, you have access rights to the public network and all private
networks to which your facility is connected, and are authorized to dial
any type of external number. However, certain numbers may be blocked
by the system administrator, which means that attempts to call these
numbers will be refused automatically. Numbers that may be blocked
are, for instance, numbers to services provided by the public network,
and certain international destinations.
Most facilities are equipped with a Least Cost Routing (LCR) service for
external calls, especially when the facility is connected to private
networks or different public network operators.
The LCR service automatically ensures that the routing of external
numbers is processed with the least possible cost, or managed
according to the most optimal calling route.
Note: Abbreviated dialing numbers are never blocked. Moreover, you
can ask the system administrator or the facility attendants to add
a blocked number to the list of abbreviated dialing numbers.