IAX2 errors

Using the below iax.conf configurations, when I dial IAX2/emtech@edifis, I get the following error messages:
WARNING[12326]: chan_iax2.c:666 iax_error_output: Information element length exceeds message size
WARNING[12326]: chan_iax2.c:6636 socket_read: Undecodable frame received from ‘217.41.34.***’

In iax.conf on one side I have this:
[edifis]
type=friend
context=incoming
auth=md5
secret=******
notransfer=yes
host=217.41.34.***
accountcode=emtech

and on the other side:
[emtech]
type=friend
context=incoming
auth=md5
secret=******
notransfer=yes
host=69.19.214.***
accountcode=edifis

EDIT:
Oh, and I have iax working between 2 machines on the same network, using almost exactly the same configuration.
It’s possible that the other side is using and old version of asterisk. (0.9 or something)

bump