[Asterisk-Users] Solution to dialing 800 numbers through FWD or SIPphone

[Barton Hodges]

Thanks to John Lodden's help, he was able to determine that the
cause of my inability to dial 800 numbers through FWD or SIPphone
was due to the Grandstream phone and the order of codecs in 
sip.conf

This order breaks the 800 dialing:

disallow=all
allow=ulaw
allow=alaw
allow=g729

However, this order allows it:

disallow=all
allow=g729
allow=ulaw
allow=alaw

Barton