Hello, I have a FreeSwitch with vanilla configuration connected to an SIP Provider. I configured the proxy-hold=true configuration on Sofia Internal profile so when i activate the Hold on internal sip regs, it will be forwarded to SIP Provider. The SIP Provider provides MoH when requested. I have a problem that results on the call on silent or terminated by SIP Provider when I do the next actions: 1- I receive a call from the SIP Provider 2- the caller activate MoH and deactivate MoH 3- the callee activate the MoH 4- Now the call is silent (with other SIP Provider the call is dropped by SIP Provider) I notice that on step 3, the FreeSwitch send a Re-INVITE without SDP, so I think this causes the call to be silent, or sometimes the SIP Provider drop the call. I replicate this issue creating a sipp scenario and verified this issue. SIPP scenario to replicate this issue https://pastebin.freeswitch.org/view/afbae914 Freeswitch logs: https://pastebin.freeswitch.org/view/7f36d5ba Command to use sipp scenario sipp -i 172.21.0.1 172.21.0.11:5080 -s 1001 -sf scenario.xml -m 1 -l 1 -r 1 -rp 1000 #172.21.0.1 -> local ip #172.21.0.11 -> Freeswitch IP Best regards, Jose Lopes