External Platform SIP Routing for Buyers

Why SIP Beats DID for Buyer Delivery

When Trackdrive forwards a call to a Buyer by DID, the
consumer's caller ID is presented as the calling number.
The Buyer's carrier sees a number Trackdrive does not own
and applies Stir/Shaken signing rules. Most providers sign
these calls B-Level (the carrier vouches for the originator
but does not own the number), and downstream carriers
increasingly treat B-Level traffic with suspicion: endless
ringing, immediate voicemail, or silent failures.

Sending the call SIP-to-SIP avoids the public PSTN entirely
and bypasses carrier reputation handling. SIP delivery is
faster, more reliable, and immune to most B-Level
degradation patterns.

SIP to TrackDrive

Source can be provided this link to SIP route to TrackDrive.
No whitelisting of IP addresses is required in TrackDrive
sip:real_td_number@sip.trackdrive.com

External Platform

For Buyers on other call tracking platforms with a
published SIP endpoint, configure an external platform
record. The SIP endpoint field requires:

• Must start with sip:
• Must contain a placeholder for the number to dial
• Must contain @ followed by a domain or IP

When SIP routing is enabled on the platform and a Buyer is
associated with that platform, the dialer substitutes the
buyer's phone number into the endpoint template and routes
the call SIP-to-SIP. Inquire if the external platform requires
whitelisting of IP address and provide those to ensure a
seamless experience in call connectivity.

Why a Centralized Table

SIP endpoints change. When a destination platform updates
its SIP host, every Buyer pointing at that platform must
follow. Defining the endpoint once on the external platform
record means the change is applied centrally rather than
edited on every buyer record.