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Extra info for Asterisk 1.4 : the professional's guide : implementing, administering, and consulting on commercial IP telephony solutions
The simple functionality we have looked at could be carried out in a single, all-encompassing context. In practice, this approach could be applicable for systems with a very limited number of users and trunks, and with very restricted functionality, as there may not be a need to restrict the calling habits of a subset of users. Use of contexts becomes desirable when we need to offer different options to different users. This is likely to be most applicable in medium and large companies, where you may have "users" ranging from the CEO down to an emergency phone in a lift.
Take this into account and be very careful when nesting macros. Dialplan features and additions In this section, we are going to look at the DEVSTATE() function and the System() application. We will see how we can check and change the "status" of devices with the DEVSTATE() function and use the system application to cause scripts on the server to be run. func_devstate The func_devstate application allows the status of a peer to be known before you dial it. This is very useful in many applications.
Func_devstate The func_devstate application allows the status of a peer to be known before you dial it. This is very useful in many applications. We will cover a few of them here but you will be able to find many more. 4. c cd .. /configure make menuselect Choose option -> 6. Com This material is copyright and is licensed for the sole use by Anna Indahl on 12th August 2009 PSC 94 Box 361, , APO, , 09824 Chapter 1 If under Dialplan Functions, the DEVSTATE() function does not show up, you will need to edit the menuselect-tree to add it.