Calls are not coming but session is showing still active

General
1

Hello sir, once i registered with sip number im sending refresh true then i can able to recive calls but if i didnt sent refresh true message to janus then after say 3min im not able to recive calls but session is showing still active…

im still getting these even i didnt send refresh:true
janus: “ack”
session_id: 3115589199488021
transaction: “txn-d86505b3-ccd4-4bb0-8b15-9dc2a06a44b0”

but if i send to janus this message then i can able to get calls in incoming call event
{
janus: “message”,
session_id: sessionId,
handle_id: handle_id,
transaction: randomTransaction(),
body: {
request: “register”,
refresh: true,
username,
proxy,
secret,
display_name,
register_ttl: 3600,
},
}

just need to understand that is session still active if it is why incoming calls are not coming is there any reason..because i didnt got any logs also