6. Troubleshooting
56
Number
Short Name
Remedial solutions by SRT
502
Unknown PDP type
Network connection failure. Restart the BDU.
If the problem persists, please contact your Service Provider.
503
User authentication fail-
ure
Network registration failure. The BDU will retry automatically.
If the problem persists, please contact your Service Provider.
504
PDP Option not sup-
ported
Network connection failure because the service option is not sup-
ported.
Please contact your Service Provider to activate authorised service.
505
NSAPI already used
Network connection failure because the service is already in use for
this subscriber. Restart the BDU.
If the problem persists, please contact your Service Provider.
506
PDP deactivated by
network
Network connection failure or the network may be down.
Please contact your Service Provider.
507
PDP retries exhausted Network connection failure or the network may be down.
Please contact your Service Provider.
508
Missing or unknown
APN
Network connection failure due to the missing or invalid of APN,
Please contact your Service Provider to the correct network settings.
509
QOS rejected
Network connection failure due to rejected QOS by the network.
If the problem persists, please contact your Service Provider.
510
PDP insufficient
resources
Network connection failure due to insufficient resources.
If the problem persists, please contact your Service Provider.
511
PDP reactivation
required
Verify the correct settings in the web console and contact your Service
Provider to activate authorised service.
512
PDP feature not sup-
ported
Network connection failure because the service option is not sup-
ported.
Please contact your Service Provider to activate authorised service.
513
PDP transaction id in
use
Network connection failure due to transaction ID.
If the problem persists, please contact your Service Provider.
514
PDP not subscribed
Verify the correct settings in the web console and contact your Service
Provider to activate authorised service.
515
PDP activation rejec-
ted
Network connection failure due to unknown cause.
Verify the correct settings in the web console.
If the problem persists, please contact your Service Provider.