Part of the client can not establish a connection with the server

The client is using flash as3 turn, tcp connection, send a few friends to test, but it is strange that in Guangzhou, Shenzhen, friends can connect to the server, part of Beijing's friends can not connect to the server
Is that why?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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Part of Beijing's friends can not connect to the server reported what good too? Lets not try to connect to connect with friends telnet, see what error will be reported.
There may be a connection timeout speed causes.
Reply:
Can not connect, what abnormalities reported ah, stickers out
Reply:
That they can not establish a connection with the server

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cited a floor yiyamzen reply:

part of Beijing's friends can not connect to the server reported what good too? Lets not try to connect to connect with friends telnet, see what error will be reported.
There may be a connection timeout speed causes.

reference to the second floor a394268045 reply:

not connect, what is abnormal newspaper ah, stickers out

Friends with the company's wireless network, it should not be a reason for Suman, the model will not be the cause of it?
Reply:

references, 4th Floor inzaghi97 reply:

Quote: references to a floor yiyamzen reply:

Part of Beijing's friends can not connect to the server reported what good too? Lets not try to connect to connect with friends telnet, see what error will be reported.
There may be a connection timeout speed causes.

reference to the second floor a394268045 reply:

not connect, what is abnormal newspaper ah, stickers out

Friends with the company's wireless network, it should not be a reason for Suman, the model will not be the cause of it?

Your friend in Beijing that java can write directly to the socket connection you what