Can't transfer *43 calls to other extension

Hello all,

I’m having an issue with a specific (and admittedly strange) call transfer scenario:

1. Call *43 from Extension 1 (Asterisk echo test). Works fine.
2. Do a blind transfer to Extension 2. Doesn’t work (Extension 2 never rings, comes back to Extension 1 instead).
3. If I call an external number instead of *43, blind transfer works fine. So the issue seems to be limited to the special “star code” calls, like *43.

As for why I need to do this instead of simply calling *43 directly from Extension 2, it’s because Extension 2 is a Grandstream HT802 ATA connected to a vintage Western Electric model 500 rotary (pulse dialing) phone which is incapable of dialing * and #. The ATA does accept pulse dialing which works fine, but it just can’t dial * and #. I want to use *43 to test the rotary phone (playing with old phones is a hobby). Any idea why call transfer doesn’t work in this case?

Thanks!
cinergi

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