Help Center/ Message & SMS/ FAQs/ Others/ How Can I Associate a Downlink SMS with an Uplink SMS? (Chinese Mainland SMS)
Updated on 2023-04-12 GMT+08:00
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How Can I Associate a Downlink SMS with an Uplink SMS? (Chinese Mainland SMS)

You can use the combination of the recipient number and Channel No. to associate a downlink SMS with an uplink SMS. The following table describes an example:

When a UE (recipient number) receives a downlink SMS and directly replies to the SMS, a downlink SMS can be associated with an uplink SMS. If you use a number other than the recipient number to reply to the SMS, that is, the recipient number of the downlink SMS is different from the sending number of the uplink SMS, the downlink and uplink SMSs cannot be associated.

If only one downlink SMS is sent from a number defined by Channel No. to a recipient number, the downlink and uplink SMSs can be associated. If multiple downlink SMSs are sent to a recipient number, a one-to-one association cannot be made.

Item

Downlink SMS Request

Response

SMS Replied

Uplink SMS Notification

Channel No.

from

from

Uplink SMS

to

Template ID

templateId

-

-

Downlink SMS recipient number (uplink SMS sending number)

to

originTo

from

Downlink SMS ID

-

smsMsgId

-

Content of the SMS Replied

-

-

body

Uplink SMS ID

-

-

smsMsgId
Parent topic: Others