Symptom

Intermittent call drops with cause code 47 and the following logs 81684481: Sep 26 08:43:24.605: Invoking Call FSM HA State=1 State=MODIFY_MOD_PEND Event= TMR_EXPIRY 81684482: Sep 26 08:43:24.605: //588611/6340A81894C2/VOIPFPI:():voip_fpi_cfsm_active_modify_mod_pend_tmr_expiry: 81684483: Sep 26 08:43:24.605: //588611/6340A81894C2/VOIPRTP:():voip_rtp_send_msg_to_spi: 81684484: Sep 26 08:43:24.605: //588611/6340A81894C2/VOIPRTP:():voip_rtp_send_msg_to_spi: Send for type 0 (disc-0, final-rsp-1) 81684485: Sep 26 08:43:24.605: //588611/6340A81894C2/VOIPRTP:():voip_rtp_send_msg_to_each_spi: 81684486: Sep 26 08:43:24.605: //588611/6340A81894C2/VOIPRTP:():voip_rtp_send_msg_to_each_spi: Send event 0 to gccb(0x7F80F879F080/588611/588611) 81684487: Sep 26 08:43:24.605: //4294967295/xxxxxxxxxxxx/VOIPRTP:():is_mpss_call: NOT mpss call gccb 0x7F80EC246E80 gccb->vdbPtr 0x7F80E6994DE0 81684488: Sep 26 08:43:24.605: //4294967295/xxxxxxxxxxxx/VOIPRTP:():is_mpss_call: NOT MAPI IF type 3 (MAPI 35) 81684489: Sep 26 08:43:24.605: //588612/6340A81894C2/VOIPRTP:():voip_rtp_send_msg_to_each_spi: 81684490: Sep 26 08:43:24.605: //588612/6340A81894C2/VOIPRTP:():voip_rtp_send_msg_to_each_spi: Send event 0 to gccb(0x7F80EC246E80/588612/588612) 81684491: Sep 26 08:43:24.606: %VOICE_IEC-3-GW: SIP: Internal Error (Software Error): IEC=1.1.180.7.13.0 on callID 588611 GUID=6340A818A1EE11E794C2EDBDDCA8B818 81684492: Sep 26 08:43:24.606: //588611/6340A81894C2/CCAPI/cc_api_call_disconnected:

Conditions

CUBE is ISR4K with LTI transcoder enabled

Workaround

None

Further Problem Description