Ask one question about read 6110 phonebook

[work hard]

PC reading phonebook entry:

I send "1e000c03000900010001030100014600570a" by my Serial tools.

I get the following:
1E0C007F000203861DF7
1E0C0003001A010800020004746573740B3133383634303836393737050001472247
1E0C0003001A010800020004746573740B3133383634303836393737050001472247
1E0C0003001A010800020004746573740B3133383634303836393737050001472247
1E0C000A0015010800710100010B01020029532264F00000000141006899
1E0C000A0015010800710100010B01020029532264F00000000141006899
1E0C000A0015010800710100010B01020029532264F00000000141006899
.....

not stop

All right,but when I send "1e000c03000900010001030100014600570a" again,I
can't receive the right infomation,and only get the following: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....
not stop

What's the matter?

Thanks

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