Re-Register during a phone call but with different call-id

[lang qiu]

Hi,

I am experiencing a problem that during a phone call, JsSip re-register with a new call-id,

so my sip server decides this is a new register then it ends the on-going phone-call.

It only happens occasionally, most of times re-register uses the old call-id so I don't know how to debug the issue, i.e. why a new call-id ?

Has anyone hit this problem ?

Thanks

Qiulang