Dial Plans; Basic Call Management; Receiving External Phone Calls; Calling Between Client Stations - Linksys SPA9000 Administrator's Manual

Chapter 4 Configuring SPA9000 Features
The <Interdigit_Short_Timer> specifies the default maximum time (in seconds) allowed between dialed
digits, when at least one candidate digit sequence is complete as dialed (see the following discussion of
Dial_Plan parameters for an explanation of candidate digit sequences).

Dial Plans

ParName
Default
The Dial_Plan parameters contain the actual dial plan scripts for each line n, where n is a number from
1 to 4.

Basic Call Management

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Receiving External Phone Calls

To receive external phone calls from the Internet, the SPA9000 must be configured with the Direct Inward
Dialing (DID) number assigned by the ITSP. Usually this is the same as the user ID, but it can be different.
You must also identify the IP phones that ring when an outside caller calls each DID number. The default is
aa, which stands for Auto-Attendant, an automated system that picks up external calls and plays
pre-recorded voice messages. If you want only the Auto-Attendant to receive a call, keep the default setting.
When the Auto-Attendant receives a call, it prompts the caller to dial the appropriate extension.
To identify specific IP phones to ring when the DID number is called, use the <Contact List> parameter,
described in

Calling Between Client Stations

To make an internal call from a client station, a user dials the extension number of the target client
station. The initial INVITE message is sent to the SIP Proxy. One of the following can happen:
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Document Version 3.01
Dial_Plan[n] for Each Line n
(*xx | [3469]11 | 0 | 00 | <:1408>[2-9]xxxxxx |
1[2-9]xx[2-9]xxxxxx | 011x. )
Receiving External Phone Calls, page 4-13
Calling Between Client Stations, page 4-13
Client Stations Calling an External Number, page 4-14
External Users Calling the SPA9000, page 4-15
Supporting Multiple DID Numbers Per Line Interface, page 4-16
Chapter 6, "SPA9000 Field Reference."
No client station currently registered with the called number—The SPA9000 replies 404 to the
calling station and terminates the call.
Basic Call Management
Linksys SPA9000 Administrator Guide
4-13