diff --git a/lib/call-session.js b/lib/call-session.js
index 2bd859e..2b04adc 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -246,8 +246,14 @@ class CallSession extends Emitter {
             }
           }
           if (!voip_carrier_sid) {
-            /* no LCR/ inbound carrier for this account/SP - at this point its a random shuffle of outbound carriers */
-            voip_carrier_sid = await this.lookupOutboundCarrierForAccount(this.account_sid);
+            if(process.env.JAMBONES_OUTDIAL_TRUNK_FAILOVER==='false') {
+              this.logger.info(`no outbound carriers found for account_sid ${account_sid}`);
+              this.res.send(603);
+              return this.srf.endSession(this.req);
+            } else {
+              /* no LCR/ inbound carrier for this account/SP - at this point its a random shuffle of outbound carriers */
+              voip_carrier_sid = await this.lookupOutboundCarrierForAccount(this.account_sid);
+            }
           }
           if (!voip_carrier_sid) {
             /* no outbound carriers exist for this account/SP */