From c22353bcd9007826896684c74a00726859d59ed6 Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Tue, 28 Oct 2025 16:17:42 +0000
Subject: [PATCH] Add SIP URI transfer to call features

Co-authored-by: sahil <sahil@vapi.ai>
---
 fern/calls/call-features.mdx | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/fern/calls/call-features.mdx b/fern/calls/call-features.mdx
index 72fa5b1ee..fed5b8a6a 100644
--- a/fern/calls/call-features.mdx
+++ b/fern/calls/call-features.mdx
@@ -129,6 +129,21 @@ curl -X POST 'https://aws-us-west-2-production1-phone-call-websocket.vapi.ai/742
 }'
 ```
 
+You can also transfer to a SIP URI:
+
+```bash
+curl -X POST 'https://aws-us-west-2-production1-phone-call-websocket.vapi.ai/7420f27a-30fd-4f49-a995-5549ae7cc00d/control' 
+-H 'content-type: application/json' 
+--data-raw '{
+  "type": "transfer",
+  "destination": {
+    "type": "sip",
+    "sipUri": "sip:+transferPhoneNumber@sip.telnyx.com"
+  },
+  "content": "Testing transfer call."
+}'
+```
+
 ### 6. Handoff Call
 Handoff the call to a different assistant.