I am able to send out SMS up to 160 characters , however, I am unable to send more than that limit. I use Concatenated SMS to send , and I foud error.

Example:
I send message "abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde12345abcde11111".

Pdu:
(ERROR)
0891683108100005F051000D91683118113521F00000A7A005000300020161F1985C8EC966B45A583C269763B219AD16168FC9E5986C46AB85C5637239269BD16A61F1985C8EC966B45A583C269763B219AD16168FC9E5986C46AB85C5637239269BD16A61F1985C8EC966B45A583C269763B219AD16168FC9E5986C46AB85C5637239269BD16A61F1985C8EC966B45A583C269763B219AD16168FC9E5986C46AB85C563
(OK):
0891683108100005F051000B813118113521F00000A7A0050003000201C2E231B91C93CD68B5B0784C2EC764335A2D2C1E93CB31D98C560B8BC7E4724C36A3D5C2E231B91C93CD68B5B0784C2EC764335A2D2C1E93CB31D98C560B8BC7E4724C36A3D5C2E231B91C93CD68B5B0784C2EC764335A2D2C1E93CB31D98C560B8BC7E4724C36A3D5C2E231B91C93CD68B5B0784C2EC764335A2D2C1E93CB31D98C560B8BC7

The first pud code is error, but I send out as one message (7-bit )but Concatenated SMS.
The second pdu code is ok, but I dont know how to 7-bit encode.

Thank for your help!