Call Directions

call directions outbound (sip → pstn) calls initiated from your sip system to external phone numbers call path your sip system → exotel sip trunk → pstn used for agent outbound calling dialers and campaigns click to call from crm alerts and notifications key requirements ip whitelisting (acl) on the trunk phone number mapped to trunk (caller id) inbound (pstn → sip) calls initiated from the telephone network to your sip system call path pstn → exotel → did → flow(connect applet) → sip trunk → destination uri → your sip system used for customer support lines sales inbound numbers ivr and call routing to pbx key requirements did mapped to an exotel flow flow uses connect applet with sip \<trunk sid> destination uri configured on the trunk (ip or fqdn) bidirectional (sip ↔ pstn) the same sip trunk is used for both outbound and inbound calls call paths outbound your sip system → exotel → pstn inbound pstn → exotel → flow(connect applet) → sip trunk → destination uri → your sip system used for contact centers pbx integrations unified inbound + outbound calling agent calling with inbound callbacks key requirements phone number mapped to trunk ip whitelisting enabled (for outbound) destination uri configured (for inbound) exotel flow with connect applet (sip \<trunk sid>) this is the most common sip trunking setup routing modes routing mode defines how exotel handles calls once they reach the did/exophone/virtual number the mode is set while mapping a phone number to a trunk mode pstn (default) standard telephony routing used for outbound calls to pstn inbound calls routed to sip systems bidirectional sip trunking flows using connect applet (sip \<trunk sid>) behavior calls behave like standard sip/pstn calls media flows directly between exotel and your sip system no voice ai or flow applet execution mode flow flow controlled routing used for voicebot / ai integrations app bazaar applets streamkit use cases behavior calls are routed into flow execution audio may be streamed to voice ai platforms required for voicebot and other non connect applets mode selection summary use case flow applet used mode outbound only none pstn inbound only connect (sip \<trunk sid>) pstn bidirectional sip trunk connect (sip \<trunk sid>) pstn voicebot / ai voicebot / applets flow important notes destination uri is mandatory for all sip trunking setups flow is mandatory for inbound calls mode controls call handling, not trunk termination bidirectional uses the same trunk for inbound and outbound