sip trunk to voip providers

new in the forum

i need to have devices register into the sip server and when those devices dial a number, the call need to be router to a voip provider

how do i setup this ? i want my calls to be router thru link2voip and voiptrading.

i have no idea so far on where i input the destination gateway.

thanks

How about the dialplan below??
-----------
[Matching Pattern:]
$request = ^INVITE
To = sip:(.+)@

[Deploy Pattern:]
To = sip:%1@<voip_provider_address>
-----------

if you dial a number, the call will be routed to the provider.

THANKS FOR YOUR response
however, i understood that i need the pbx to be able to route calls

scenario is as follow:

i want users to register on sip server with uid and pwd i give them.
wehn they dial in, the call should go to my voip provider ....

the trick is, for the call to go thru, it needs to be authentified. would it support

sip:user:passord@voipsipprovider ?

my otherissue is that devices do not register..do not know why

What devices are you trying to register? How have you set them up. Is the sip server behind a firewall, if so is the firewall ports open for the sip server.

Have you read this document carefully and followed the directions.

http://www.brekeke.com/products/product ... simple.php

yes i did setup port forwarding for that server...

the server is behind nat router. all udp ports are forwarded and opened in firewall

registering is random BUT my main issue is how to setup a sip trunk

i want that the device that registers dial for ex 16467051314 and that the call is routed to my sip trunk provider (voiptrading)

there is no option for this as i need to have the sip trunk account authentified. how do i do this ?