Holger Hans Peter Freyther wrote:
do you happen to have a PCAP file of the stream arriving at the BTS? I had a lot of issues with FreeSWITCH and their jitter buffer and as a minimum I would like to at least have the right inspection/logging to detect/analyze these issues.
hi holger,
i traced data between openbsc and osmo-bts. i put a sequence number in the payload to see, if packets get dropped. i could see that the wireshark actually showed the missing frames. also i put debug into libortp to see if they arrive there, they do! the jitter algorithm just dropped them. for my case (lcr) i did a 30 minutes call today using osmo-bts (calypso-bts) and openbsc-lcr. it worked best, without any raising delay. i think that my setup (slow netbook, many processes) does not get well with jitter buffer of libortp.
regards,
andreas