SMS Campaign Integration for Call Centers: 10DLC Registration, Dialer Workflows, and Cadences That Convert

Last updated: March 2026 | Reading time: ~26 minutes Your agents dial 400 numbers a day and talk to maybe 60 of the people attached to them. The other 340 calls go to voicemail, get screened, or ring out. Meanwhile, 90% of text messages get read within 3 minutes of delivery. That gap -- between phone calls that don't connect and text messages that get read almost instantly -- is where most call centers are leaving money on the table. The existing guide on SMS campaigns for call centers covers the compliance fundamentals and cadence theory. This guide goes into the technical integration: how to wire SMS into your VICIdial dialer workflow so texts fire automatically based on call outcomes, and how to build multi-channel cadences that actually improve your contact rate. But first, the compliance piece, because if you get that wrong, nothing else matters. 10DLC Registration: The Non-Optional First Step Since February 1, 2025, US carriers block 100% of unregistered Application-to-Person (A2