This error means that the destination was unavailable or unreachable. This error occurs if you are trying to reach an unreachable or switched-off destination handset.
To troubleshoot this error, you need to determine with end user whether the device destination device a0 has enough signal and b) receives messages that are not coming via Vonage API.
We recommend that the end user tries the following:
· Reboot the phone to refresh the network signal.
· Clear phone inbox to ensure it is not full.
· Check if there are any phone applications/settings that are filtering SMS.
· Alternatively, please swap the SIM to another phone to verify if the delivery issue is phone related
If none of the solutions stated above helps and the device is receiving SMS from non Vonage platform, please send examples which are no older than 24h to our support for further investigation with route provider.
Articles in this section
- What is SMS EU data center isolation?
- Vonage SMS Message IDs
- Does Vonage charge for SMS if destination is invalid?
- Can I use a US Vonage Long Virtual Number to send SMS to the US and Canada?
- Number Pools
- How to check that I trust Vonage TLS Certificate?
- [Internal] How to troubleshoot network issues reported by customers when sending API requests
- What encoding standards does Vonage support?
- Setting a Validity Period (TTL) for SMS/MMS
- SMS Verizon Pass-through Fees