Reference section - SMPP
unbind
SMPP unbind
SMPP (Short Message Peer-to-Peer) is an open, industry standard protocol designed to provide a flexible data communications interface for the transfer of short message data between External Short Message Entities (ESME), Routing Entities (RE) and Message Centres (MC). The SMPP protocol is a means by which applications can send SMS messages to mobile devices and receive SMS from mobile devices.
4.1.1.8 unbind Syntax
The purpose of the SMPP unbind operation is to deregister an instance of an ESME from the MC and inform the MC that the ESME no longer wishes to use this network connection for the submission or delivery of messages.
Thus, the unbind operation may be viewed as a form of MC logoff request to close the current SMPP session. The format of the SMPP unbind PDU is defined in the following table.
| Field Name | Size Octets | Type | Description | Ref. |
|---|---|---|---|---|
| command_length | 4 | Integer | Defines the overall length of the PDU. | 4.7.4 |
| command_id | 4 | Integer | 0x00000006 | 4.7.5 |
| command_status | 4 | Integer | Indicates status (success or error code) of original bind_transceiver request. | 4.7.6 |
| sequence_number | 4 | Integer | Set to a unique sequence number. The associated unbind_resp PDU will echo the same sequence number. | 4.7.24 |
4.1.1.9 unbind_resp Syntax
SMPP v5 Unbind Response reference
The SMPP unbind_resp PDU is used to reply to an unbind request. It comprises the SMPP message header only.
The format of the SMPP unbind_resp PDU is defined in the following table.
| Field Name | Size Octets | Type | Description | Ref. |
|---|---|---|---|---|
| command_length | 4 | Integer | Defines the overall length of the PDU. | 4.7.4 |
| command_id | 4 | Integer | 0x80000006 | 4.7.5 |
| command_status | 4 | Integer | Indicates outcome of original unbind request. | 4.7.6 |
| sequence_number | 4 | Integer | Set to sequence number of original unbind request. | 4.7.24 |
SMPP Platforms, Tools and Services
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SMS Code Bench >
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