SMPP ESM Class problem when sending SMS
SMPP service providers handle the ESM class differently in the SMS
submission requests. Some require that it should be set to 0x00, others
ask for a 0x08 setting. By default the SMPP service provider connection
in the Ozeki NG SMS Gateway sets this value to 0x08. This guide gives
you instructions on how you can set the ESM class to 0x00.
To change the ESM class setting in the SMPP submit pdu to 0x00, you
have to open the "Advanced" tab of the configuration form of the
SMPP service provider connection. On this tab, you should check the
"Set ESM class to 0x00" checkbox (Figure 1).
Figure 1 - SMPP Submit, ESM class
After this setting your SMS submit PDU's will have the ESM class
set to 0x00. The setting takes effect as soon as you click OK on the
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