Common mistakes in SMPP

[Victor_R]

This article outlines some of the more common mistakes when using SMPP and can serve as a checklist of common misconfigurations.

Bind_Transmitter/Bind_Receiver/Bind_Transceiver:

The interface_version, must be declared, most often 0x34 if your ESME supports SMPP version 3.4.

Submit_SM:

source_addr_ton, Type of number needs to match the source_addr:

TON	Value
Unknown	0x00
International	0x01
National	0x02
Network Specific	0x03
Subscriber Number	0x04
Alphanumeric	0x05

source_addr_npi, Numeric Plan Indicator needs to match the source_addr:

NPI	Value
Unknown	0x00
MSISDN	0x01

For example, the sender ID Sinch requires 0x05/0x00 while 467012345678 requires 0x01/0x01.

dest_addr_ton and dest_addr_npi should be set to 0x01/0x01 as the receiving address is always an International MSISDN.

data_coding, commonly referred to as the DCS-value. Most often 0x00 for SMSC Default alphabet (GSM-7) or 0x08 for Unicode/UCS2.

[#2]

Learn how to get started with SMS by watching this step-by-step tutorial. The video explains  the basics of SMS and shows you how easy it is to send your first message with Sinch:

Sign up to the Sinch Build Dashboard and get started today or take a look at the Sinch SMS Product page to learn more about our SMS products.