# SMPP

[SMPP](https://smpp.org/) is the industry standard for sending and receiving SMS. Please contact our customer service to enable this feature.

## Get SMPP Account

Please contact customer service to create your own SMPP account.

## Using SMPP

### Connection

Please connect to the following server:

| Server Address  | Server Port | SSL Server Port |
| --------------- | ----------- | --------------- |
| smpp.ycloud.com | 30002       | 30012           |

Contact us to retrieve our public certificate.

###

### Binding

To send a bind request, please contact us to retrieve your SMPP system ID and password.

| Status | Description                         |
| ------ | ----------------------------------- |
| 0      | Success                             |
| 3      | Invalid SMPP system ID and password |
| 5      | Exceeds connection limit            |

###

### Submitting Messages

| Status | Description              |
| ------ | ------------------------ |
| 0      | Success                  |
| 4      | Invalid phone number     |
| 6      | Exceeds connection limit |

### Delivery Reports

Below is an example of the "short\_message" parameter in the "deliver\_sm" PDU:

```javascript
id:11041301030001006668 sub:001 dlvrd:001 submit date:2111040501 done date:2111040501 stat:DELIVRD err:0 text:none
```

"Submit date" and "done date" are in UTC time.

When sending, 'err' is '0', other values are:

| Error Code | Description                                                          |
| ---------- | -------------------------------------------------------------------- |
| 3          | Insufficient balance                                                 |
| 4          | Use of sensitive words not allowed                                   |
| 10         | The phone number is blacklisted                                      |
| 18         | Invalid signature. Signatures are required for SMS in Mainland China |
| 65         | Rejected by us, usually for SMS in Mainland China                    |


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