[Asterisk-Users] grandstream transfer, park and conference

[Philipp von Klitzing]

Hi!

> I have 2 grandstream budgetone 100 series. I can call allright, but I 
> can™t do call transfer, park and call conference. (all features works 
> with tdm devices) the 

1. Check if Asterisk is always in the media path, i.e. you need the t or 
T option (or something similar) in your Dial statement. Alternatively you 
could introduce a canreinvite=no in sip.conf for the GS phones.
2. Check your context setup in extensions.conf and make sure that in call 
cases your GS phone has the "parkedcalls" context available

Philipp