[asterisk-users] Dialplan to reach external SIP phone

[Meadows Hoa]

If I have Asterisk setup with local SIP phones configured but need to call a SIP phone which is not local but actually on another VLAN, what would the dialplan need to look like? 
 
Could the Asterisk dialplan directly call a SIP phone which is not a local phone within its sip.conf and dialplan, if the Directory Number and IP is known (or host name)? 
 
Didn't plan on needing a SIP trunk so assuming this is possible anyway? 
 
Would Asterisk have to actually go over a SIP trunk to another call manager (which has that phone configured as a local phone)? Thinking there has to be another way?
 
Any help would be appreciated. Thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20140401/f9d6e69b/attachment.html>