When I am sending a SUBSCRIBE message immediately after a REGISTER message, I am getting a 403 response from asterisk server. But if I wait a while and then send SUBSCRIBE, I am getting the 2xx response followed by the NOTIFY message.
Why this is happening ?
Thereâ€™s one more thing I would like to query aboutâ€¦
I sent a SUBSCRIBE message for some extension say-4000 to asterisk. I got back the NOTIFY message with status â€œopenâ€