What is the default timeout defined in the SIP specification after which SIP Server will put a DN not responding to INVITE in Out of Service?

What is the default timeout defined in the SIP specification after which SIP Server will put a DN not responding to INVITE in Out of Service?
A . 2 Seconds
B . 4 Seconds
C . 8 Seconds
D . 16 Seconds
E . 32 Seconds
F . 64 Seconds

View Answer

Answer: E