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Provider FPT Telecom (Vietnam)

Follow these steps to connect to FPT SIP trunk:

Add this list to ACL configuration in conf/autoload_configs/acl.conf.xml

 <list name="fpt_sip_trunk" default="deny">
<node type="allow" cidr="SIP_SERVER_IP/32"/>
<node type="allow" cidr="MEDIA_SERVER_IP/32"/>

FPT use two server for signaling and media: SIP_SERVER_IP is the IP address for signaling server, MEDIA_SERVER_IP is the IP address for media server.

Bridge call to FPT:

<action application="bridge" data="sofia/external/${dialed_number}@$${sip_trunk_ip_fpt}" />

${dialed_number}: the destination number in Viet Nam

$${sip_trunk_ip_fpt}: the SIP_SERVER_IP address in above ACL.