I’ve been learning English for 20 years. The more I learn, the more I find my English is poor, however, at least I can express myself freely on both speaking and writing now. I’d like to share my Engl
Learning is the most pleasant thing all over the world, but I’m surprised that so many people think it’s boring, after all, they don’t get the fun out of it.A nice-year-old child is living by instinct
Register Expires is the parameter that controls how often your client contacts the SIP server to remind it tha
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