Receiving messages

Receive delivery receipts and inbound SMS through deliver_sm.

deliver_sm

Use deliver_sm to receive delivery receipts and inbound SMS.

Delivery receipts

If you request delivery receipts in submit_sm, eCall forwards them through deliver_sm.

For delivery receipts, esm_class is 0x04.

Inbound SMS

If you configure inbound SMS forwarding in the eCall portal, eCall forwards received messages through deliver_sm.

This applies to leased receive numbers.

For inbound SMS, esm_class is 0x00 or 0x40.

Use bind_transceiver when you want to send messages and receive callbacks on one session.