diff --git a/backend/src/voice/voice.controller.ts b/backend/src/voice/voice.controller.ts
index 17ed440..15178ed 100644
--- a/backend/src/voice/voice.controller.ts
+++ b/backend/src/voice/voice.controller.ts
@@ -164,25 +164,40 @@ export class VoiceController {
     this.logger.log(`Full body: ${JSON.stringify(body)}`);
 
     try {
-      // Extract tenant domain from phone number mapping
-      // For now, we'll need to determine which tenant owns this phone number
-      // TODO: Add phone number to tenant mapping in database
+      // Extract tenant domain from Host header
+      const host = req.headers.host || '';
+      const tenantDomain = host.split('.')[0]; // e.g., "tenant1" from "tenant1.routebox.co"
       
-      // For multi-tenant, we need to route to the correct user's browser Device
-      // The Device identity is the userId we used when generating the access token
+      this.logger.log(`Extracted tenant domain: ${tenantDomain}`);
+
+      // Get all connected users for this tenant
+      const connectedUsers = this.voiceGateway.getConnectedUsers(tenantDomain);
       
-      // For now, let's dial ALL connected clients (you can refine this later)
-      // Using a simple approach: dial the most recently connected user
+      this.logger.log(`Connected users for tenant ${tenantDomain}: ${connectedUsers.length}`);
+      
+      if (connectedUsers.length === 0) {
+        // No users online - send to voicemail or play message
+        const twiml = `<?xml version="1.0" encoding="UTF-8"?>
+<Response>
+  <Say>Sorry, no agents are currently available. Please try again later.</Say>
+  <Hangup/>
+</Response>`;
+        this.logger.log(`No users online - returning unavailable message`);
+        return res.type('text/xml').send(twiml);
+      }
+
+      // Build TwiML to dial all connected clients (first to answer gets the call)
+      const clientElements = connectedUsers.map(userId => `    <Client>${userId}</Client>`).join('\n');
       
       const twiml = `<?xml version="1.0" encoding="UTF-8"?>
 <Response>
   <Say>Connecting your call</Say>
-  <Dial>
-    <Client>e6d45fa3-a108-4085-81e5-a8e05e85e6fb</Client>
+  <Dial timeout="30" action="${host}/api/voice/webhook/dial-status">
+${clientElements}
   </Dial>
 </Response>`;
 
-      this.logger.log(`Returning inbound TwiML - dialing Client`);
+      this.logger.log(`Returning inbound TwiML - dialing ${connectedUsers.length} client(s)`);
       res.type('text/xml').send(twiml);
     } catch (error: any) {
       this.logger.error(`Error generating inbound TwiML: ${error.message}`);
diff --git a/backend/src/voice/voice.gateway.ts b/backend/src/voice/voice.gateway.ts
index 231effc..cf7daba 100644
--- a/backend/src/voice/voice.gateway.ts
+++ b/backend/src/voice/voice.gateway.ts
@@ -290,4 +290,20 @@ export class VoiceGateway
       socket.emit('ai:action', data);
     }
   }
+
+  /**
+   * Get connected users for a tenant
+   */
+  getConnectedUsers(tenantDomain?: string): string[] {
+    const userIds: string[] = [];
+    
+    for (const [userId, socket] of this.connectedUsers.entries()) {
+      // If tenantDomain specified, filter by tenant
+      if (!tenantDomain || socket.tenantSlug === tenantDomain) {
+        userIds.push(userId);
+      }
+    }
+    
+    return userIds;
+  }
 }