diff --git a/lib/call-session.js b/lib/call-session.js
index f16f9da..45851f5 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -124,14 +124,22 @@ class CallSession extends Emitter {
       };
 
       if (this.req.locals.registration) {
-        debug(`sending call to user ${JSON.stringify(this.req.locals.registration)}`);
+        debug(`sending call to registered user ${JSON.stringify(this.req.locals.registration)}`);
+        let destUri = this.req.uri;
+        if (this.req.has('X-Override-To')) {
+          const dest = this.req.get('X-Override-To');
+          const uri = parseUri(contact);
+          uri.user = dest;
+          destUri = stringifyUri(uri);
+          this.logger.info(`overriding destination user with ${dest}, so final uri is ${destUri}`);
+        }
         const contact = this.req.locals.registration.contact;
         if (contact.includes('transport=ws')) {
           uris = [contact];
         }
         else {
           proxy = this.req.locals.registration.proxy;
-          uris = [this.req.uri];
+          uris = [destUri];
         }
       }
       else if (this.req.locals.target === 'forward') {