Symptom

CUBE does not honor codec configured (through "codec" or "voice-class codec" CLI) under outbound dial peer when Transcoder (LTI) is being used with "midcall-signaling block" configured. CUBE offering additional codec in the outbound INVITE. For example: With "midcall-signaling block" CLI Incoming offer: G729 Codec configured under outbound dial peer:G711ulaw Codec offered by CUBE to outbound leg: G729 and G711ulaw. Without "midcall-signaling block" CLI Incoming offer: G729 Codec configured under outbound dial peer:G711ulaw Codec offered by CUBE to outbound leg: G711ulaw.

Conditions

When LTI and "midcall-signaling block" configured together

Workaround

Remove "midcall-signaling block" or configure "midcall-signaling passthru media-change" if feasible.

Further Problem Description