Symptom
Sip to isdn calls drop if a video enabled endpoint sends a sip info messages requesting fast picture
Conditions
phone A (pstn user) dials phone B, phone B places phone A on hold and dials phone C,
video is established between phone B and C, phone B user then transfers phone A to Phone C.
Phone C sends sip info messages to the pstn gateway requesting fast picture.
Workaround
disable video on the phones
use the following sip profile
Conf t
Voice ser voice
Sip
Sip-profile inbound
Sip-profile 5555 inbound
!
voice class sip-profiles 5555
request INFO sip-header Content-Type remove
!