SIP/2.0 480 Temporarily Unavailable
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Got SIP response 480 "Temporarily Unavailable". Possible reasons and solutions:
1. Call is rejected by provider/end device. In this case please check with the provider.
2. Call fails with HGC 20 due to unreachable/unregistered device/provider. In this case check device/provider registration status.
3. Call is rejected by MOR due to high load. In this case, there will be no CDR in the last calls section. More information on how to check and solve such issues is available here
Check also:
