Add a new SIP (chan_pjsip) Trunk
Trunk Name: Voxtelesys
Outbound CallerID: Number from Voxtelesys
Maximum Channels: Line limit from Voxtelesys
Change to the "Dialed Number Manipulation Rules" tab
Match the rules below
Prepend: 1
| Match Pattern: NXXNXXXXXX
Match Pattern: 1NXXNXXXXXX
Match Pattern: 911
Match Pattern: 922
Test dial 911 to verify address
Match Pattern: 011.
International calling
Change to "pjsip Settings" tab
Username: From Voxtelesys
Secret: From Voxtelesys
SIP Server: From Voxtelesys
Change to "Advanced" tab under pjsip Settings
From Domain:Same as SIP Server from Voxtelesys
Change to "Codecs" tab under pjsip Settings
Set the following codecs in order