Hello Tuan,

Not sure what you mean by "caching the INVITE package" but how usually PN in implemented is to delay (at server level) the relay of the INVITE (to the callee) while you run an extern script (triggered when the INVITE is received on the proxy) to do the PN.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 31.05.2016 12:56, Tuan Phan Ngoc wrote:

Dear,

I cached invite packages from caller when callee offline on redis-cache, push notification to wake up callee and resend to callee. I don't know how to opensips know package (Ringing,... ) from callee and forward to calller.

I can't find any documents about follow route call for opensips.

Thanks for your help.


--
Thanks and Best Regards,
*PHAN NGOC TUAN*
Phone 0985-251-257.
U29B-U31B-U33B Road Tan Thuan, Tan Thuan EPZ, District 7, HCM City, Vietnam


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