using FreePBX pjsip outbound trunk, I did not find a way to dial out #21#.

Leading hash sign seems to be eaten and not make it through the trunk.

Tried multiple ways (dialing through custom feature code, etc.) and adding a custom dial plan in the trunk or outbound route (compose 21# and prepend #), etc. Nothing seems to work.

In contrast, dialing *21x.# through the trunk works well with setting up an outbound route dial plan (compose 21x.# and prepend *).

This question is addressed here, as I did not find any helpful answers in the freepbx community forum.

closed as too broad by Rui F Ribeiro, G-Man, RalfFriedl, msp9011, JigglyNaga Dec 7 '18 at 9:54

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