[Asterisk-Users] Problem with IAXy Digium device

[Barclay McInnes]

I've got one of those cool little IAXy devices, and for the most part, it
works well.  But once every moment or two, I hear a high pitched meep sound
when it's being used, and the Asterisk box spews a corresponding entry of :

WARNING[7176]: chan_iax2.c:473 iax_error_output: Ignoring unknown
information element 'Unknown IE' (32) of length 4

Been searching around for a bit, but haven't found any corresponding
information on this.  Has anyone else used this device much, or seen a
potential cause for this?

Thanks
Barclay McInnes