T21P-E2 sends a CANCEL to put a call in hold

After answering a call with T21P_E2 (52.83.0.10), when the line button is pressed to put the call in hold, it sends a CANCEL instead of a INVITE with a=sendonly (like the T21P).

I have the sip but I tried to posted and automatically the system said it was spam.

Thank you, Diego Betancor

  ERROR_hold.txt (Size: 3.37 KB / Downloads: 0)