### Answer --- To configure a transfer to an extension after dialing the main number, set the transfer number extension field in the Transfer Call Tool or Call Transfer Node. [(1) ]() [(2) ]() The extension must be formatted using digits 0-9,

*

, or

#

(e.g.,

123#

) . Steps: 1. Set the transfer number to the main number in E.164 format (e.g.,

+12137771234

) . [(1) ]() 2. Enter the extension in the extension field (e.g.,

1234#

) . [(1) ]() [(2) ]() Note: There have been community reports of extensions not being included during actual calls despite being configured correctly in the node settings. [(3) ]() One suggested workaround is to try enabling "Keep raw input" in the transfer settings, though results may vary. If you're using custom telephony (e.g., Twilio) , extension dialing via

sendDigits

may require handling on your telephony side, as this feature has been noted as a roadmap item. [(9) ]()

​ To learn more, see the sources I considered: [[1] Transfer call](https://docs.retellai.com/build/single-multi-prompt/transfer-call) [[2] Call Transfer Node](https://docs.retellai.com/build/conversation-flow/call-transfer-node) [[3] Call transfer extension number not working in call transfer node](https://discord.com/channels/1186424376300679209/1425942962810130452) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

I'm using dynamic routing option, so how to represent the extension