Using Direct Inward Dialing To Phone Extensions - Linksys SPA921 - Cisco - IP Phone Installation And Configuration Manual

Configuring Phone Service and Voice Mail
Configuring Inbound Call Routing
STEP 7
NOTE
SPA9000 Voice System Installation and Configuration Guide for Web UI
To verify your progress:
a. Verify that incoming calls are routed directly to the desired extension number.
b. If you configured a call forward option, verify that the call is forwarded
correctly after the specified Call Forward No Answer time.

Using Direct Inward Dialing to Phone Extensions

Direct Inward Dialing allows the external users to dial directly any phone extension
in the SPA9000 Voice System, without passing through the Auto Attendant or the
receptionist.
Before proceeding with the configuration you need to have the full
correspondence between the external (DID) number and the extension number.
•
Direct Inward Dialing requires network support for SIP trunking DID.
•
It is important that the DID number format match exactly the format of the
number signaled in the SIP trunk.
•
Please check with your Service Provider to confirm the availability of this
feature and the correct DID number format, before proceeding with this
configuration.
SYNTAX: <DIDn1>:+<Extn1> | <DIDn2>:+<Extn2> |
<DIDn3>:+<Extn3> | <DIDn4>:+<Extn4> | <DIDn5>:+<Extn5> |
<DIDn6>:+<Extn6> | <DIDn7>:+<Extn7> | <DIDn8>:+<Extn8> |
<DIDn9>:+<Extn9> | <DIDn10>:+<Extn10> | <DIDn11>:+<Extn11> |
<DIDn12>:+<Extn12> | <DIDn13>:+<Extn13> | <DIDn14>:+<Extn14>
| <DIDn15>:+<Extn15> | <DIDn16>:+<Extn16> | <default_route>
•
Enter a plus (+) or a minus (-) before the extension number to achieve the
desired results for caller ID and call routing:
•
+<Extn1> The extension will be alerted when there is an incoming call to the
DID number, and the DID number will be used as the local user-ID in outbound
SIP requests, along with the display-name of the extension.
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