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Switching to VoIP
book

Switching to VoIP

by Theodore Wallingford
June 2005
Intermediate to advanced
502 pages
21h 48m
English
O'Reilly Media, Inc.
Content preview from Switching to VoIP
This is the Title of the Book, eMatter Edition
Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.
Asterisk Dial-Plan
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399
f Forces caller ID to match the extension number of the outgoing channel. For
example, some phone companies don’t allow caller ID that doesn’t match
the trunk that it’s being used with.
url
Finally, the optional url parameter will be sent to the called party’s endpoint
upon connection, if the endpoint supports URLs (some IP phones support this).
DigitTimeout
DigitTimeout(seconds)
Sets the maximum time out, in seconds, allowed between dialed digits on the cur-
rent channel only.
Directory
Directory( )
Presents the user on the current channel with an IVR directory of voice mailboxes.
DISA
DISA,password|context
Gives the user direct inward system access capability, or the ability to obtain dial-
tone and the ability to originate calls from the current channel in the specified con-
text. User must enter a password using the dial-pad that matches the specified
password.
Echo
Echo( )
Immediately plays back the incoming audio signal back on the same channel it’s
coming from. Used to give testers an idea of how significant echo is on any given
connection. Users can exit to the next priority by pressing the pound key (
#).
EnumLookup
EnumLookup(extension)
Looks up the specified extension number in ENUM and returns the SIP or TEL URI
to the variable called ENUM. If a SIP entry exists, ...
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Publisher Resources

ISBN: 0596008686Catalog PageErrata