Sending SMS longer than 256 bytes

ibai · Post by **ibai** » Mon Nov 27, 2006 6:48 pm

I am working on a SMS application, with ALT.SMS.SmppClient. I need to send a sms longer than 256 bytes.
For that purpose, I need to use the optional parameters in the SUBMIT_SM PDU message ( sar_msg_ref_num, sar_total_segmentes , sar_segment_seqnum, more_messages_to_send).

Is it possible to do that with the ALT.SMS.SmppClient?

I'm using the SMPP Protocol version 3.4.

Thank you for your help.

Post by **alt** » Fri Dec 01, 2006 1:17 am

Sorry, it is not implemented yet, but in process...

It is known that parameter "message_payload" can contain user data up to 64K, but some servers doesn't allow to send such a big message in one packet.

How many bytes in message_payload your server accepts?

I have unfinished method SubmitText, which should send several Submit_SM packets with optional TLV parameters. I think I have to add method's parameter for bytes length to split text.

ibai · Post by **ibai** » Fri Dec 01, 2006 10:38 am

Thank you,

We are using SubmitText method to send messages longer than 256 bytes.

We have done some succesfully sendings with Vodafone SMSC. We have checked that the SMS are displayed as only one, and this our main objetive.

We would be greatfull if you sent us any improvement in the ALT.SMS.SmppClient.

Post by **alt** » Fri Dec 01, 2006 6:17 pm

I have released version 1.1.1 where you can try SubmitText with SubmitMode.Payload