Why it happens
- A mobile phone that is off or has no signal.
What to check
- Nothing to fix on your side; try later or send a message.
Q.850 cause 20: Subscriber absent
Subscriber absent: the mobile user is not reachable (switched off, out of coverage, not registered).
20
- Q.850 name
- Subscriber absent
- Group
- Normal events
- FreeSWITCH
- SUBSCRIBER_ABSENT
- Asterisk
- HANGUPCAUSE=20
- SIP response from a gateway
- 480 Temporarily Unavailable
- In SIP
- Reason: Q.850;cause=20