I notice that my Grandstream HT286 is using packet2packet bridging against asterisk but my android sip client doesn’t.
Why, and which is more desirable?
Do you mean as against native bridging?
SIP is more well developed in Asterisk. It may also be that there is no native bridging concept in H…
Native bridging is a better use of the network, but is not always possible or may make NAT handling difficult. You cannot use it if Asterisk has to monitor for DTMF, or to record the call.