Reference section - SMPP
unbind
SMPP unbind
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
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 Analyser
The SMPP Analyser acts as an SMPP proxy, with the client application binding to the service and the service onward binding to the SMSC or SMS Gateway. Packet captures can be viewed in your browser or exported into Wireshark. Use the online SMPP Analyser >
SMSC Simulator
Looking to test your SMS application or SMS-enabled application before connecting to a live SMS gateway or SMSC? Our SMSC Simulator service allows you to test using the SMPP protocol v3.3, v3.4 and v5. Read more about SMSC Simulator >
SMPP Client
Test an SMPP account and service using the Melrose Labs SMPP Client . Use from your web browser. No software installation necessary.