Address Parameters
The SMPP specification defines several parameters, which relate to the source and destination addresses of a message.
The following table specifies the values that should be used when issuing submit_sm requests to the SMPP Server.
| Field Name | Value |
| Source_addr_ton | It is recommended that the address be always expressed in international format, i.e. prefixed with country code. In this case, the TON value is also ignored.However, if a longcode address is expressed in national format, the TON value should be set to 2. |
| Source_addr_npi | This value is not used by the SMPP Server |
| Dest_addr_ton | It is recommended that destination addresses be always expressed in international format, i.e. prefixed with a country code. Where this is the case, the SMPP Server will ignore the TON parameter.However, if the address is expressed in national format, the TON value should be set to 2. |
| Dest_addr_npi | This value is not used by the SMPP Server |