Send PDU mode SMS more than 140 Bytes

[jengy]

hi, every

I found the PC Suit 6.6 can send message more than 140 bytes in several sms and the receiver can receive the message in a single one. Anybody can tell me how can do it with AT command?
I read the GSM specification 03.40 the mobile phone join the message together by the MMS (More Message to Send) flag in the SMS-DELIEVER packet,but how can I set the flag in the SMS-SUBMIT flag.

BR