Direct routing for SIP trunks

Direct Routing for SIP Trunks

Call2Teams Direct Routing for Trunks connects your customer's SIP Trunk directly to Microsoft Teams — mapping their existing phone numbers into the Teams environment via BYOC. They keep their carrier, keep their numbers, and get full native Teams calling on top. Nothing changes underneath. Teams calling starts on top.

Book a call

Your SIP Trunk. Your numbers. Native Teams calling.

Call2Teams Direct Routing for Trunks connects your customer's SIP Trunk to the Call2Teams platform, which maps inbound and outbound calls to Microsoft Teams Phone System licensed users via a standard Direct Routing interface. The customer's existing phone numbers are assigned directly to Teams users — no number porting, no call plan change, no carrier contract to renegotiate.

Calls flow from the PSTN through the SIP Trunk into the Call2Teams core, then out to the Teams client via Direct Routing. The route back is identical in reverse. The customer's carrier relationship stays exactly as it is. What changes is that their users now make and receive those calls from the native Teams interface.

portrait-beautiful-young-woman-working-fresh-air-outside-corporate-woman-writing-her

SIP registration or static IPs — your choice

The SIP Trunk connects to the Call2Teams platform in two ways: via SIP registration, or via statically configured, highly available IPs for full redundancy. Partners choose the connection method that best fits their infrastructure and redundancy requirements. Both options are configured directly in the Call2Teams portal — no on-site visit, no dedicated network connection required.

A young woman in an office, talking on the phone

Assign numbers to users, queues, or auto-attendants

Once the Trunk is connected, phone numbers are assigned in the Call2Teams portal. Numbers can be assigned to individual Teams users, call queues, or auto-attendants — giving access to the full Microsoft Phone System feature set. Number assignment is managed by the SP or reseller admin, with no Microsoft admin access required for each change.

Full Teams Phone System. No separate dial pad.

Once a user is assigned a number from the connected SIP Trunk, they make and receive calls directly from the Microsoft Teams client. The full Teams Phone System feature set is available from day one — there is no separate call control layer to navigate, because Teams is the call control layer.

Background-form-dstny-blue-gradient
Background-form-dstny-blue-gradient

Book a demo

Want to see our solutions in action? Book a demo today for a tailored consultation with one of our channel experts.