Hi All,

We have a SIP client (endpoint) and wanted to integrate IPSec to the SIP
Client.
The client will sent the Security-Client header to server and server will
sent the Security-server header to the client. In these messages client and
server are sending the spi-c and sip-s value to each other for further
communication. Could you please clarify me  below questions ?

1. Do we need two(server and client) spi values at the time of
communication over UDP or TCP ?
2. At the time of communication how can we share the pre-shared key ?

Thanks
Priyaranjan
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