I am implementing the c2md, in phone android 2.2, I have follow the all the steps from http://www.vogella.de/articles/AndroidCloudToDeviceMessaging/article.html
and use the php code from C2DM implementation PHP code ,i get response id=0:1323075593128502%2fd4838f00000031 but i can not get the notification of phone.also i have try with command prompt. Does anyone idea where i have made the mistake.
Also register the account on google.
Firewall issue, probably? Try when the device is on 3G, as opposed to WiFi.