Weird / Unusual Characters on the console

Hi I’ve been seeing this unusual characters when I upgraded from 1.4.2 to 1.4.5 … this especially happens on when I call through zaptel. Here is what I used to see:

== Spawn extension (outgoing, h, 2) exited non-zero on ‘SIP/2001-09139170’
– Stopped music on hold on UÃ¥QHJIJ
ÇB
– Hungup ‘UÃ¥QHJIJ
Ç’

Can somebody tell or help me to figure out why this happen?

Thank you so much…