[Freeswitch-users] Avoiding media timeouts in remote systems

I have FS talking to a carrier, and got on-hold the carrier sends a reINVITE with a=sendonly, so FS stops sending media, but the carrier drops the call due to a media timeout. Appears their SIP and RTP stacks aren't talking to each other very well. Can I compensate for this by continuing to send RTP to keep the their MGW session alive? Regards, Richard