GSM, GPRS, cmwap, cmnet, 3G, TD-SCDMA, CDMA 2000, WCDMA

Http://wjf88223.blog.163.com/blog/static/35168001201142210165865/

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Huawei gtm900b (GSM/GPRS device, 3G not supported) uses GPRS dial-up Internet access
1. Configure the APN (Access Point)
At + cgdcont = 1, "ip", "cmnet"
About the Access Point of the GPRS network
Http://wenda.tianya.cn/question/79082ccf5ecb125a
Http://bbs.shouji.com.cn/do/viewthread? Thread = 1, 380794
Mobile 3G network access point... To be continued...
2. Enter the TCP/IP Function
At % etcpip
3. Open a TCP Link
At % ipopen = "TCP", "116.237.193.34", 12345, 4098
4. Send data: 1234 to TCP peer
At % ipsend = "31323334"
5. Close the link
At % ipclose
Http://download.csdn.net/detail/songqqnew/4491920
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Huawei gtm900b

1. Siemens TC35I GSM/GPRS module

...
2. ZTE's WCDMA module ad3812

Http://www.witech.com.cn/product/3G.html
Http://download.csdn.net/detail/songqqnew/4475259

Figure 1-1 shows the system diagram of ad3812v2.
☆Rf
● Dual-worker
● Acoustic surface filter
● RF Power Amplifier
● Primary and Secondary antenna design
☆Baseband part
● High-performance WCDMA and GSM control chips (including baseband control and RF modulation and demodulation elements)
● Large-capacity MCP memory, including flash and SDRAM
● Voltage Controlled Crystal Oscillator

PCI-E interface pin

3. Huawei e261 WCDMA 3G network adapter

Memory and baseband (one chip of baseband and ZTE)

RF Transceiver: (similar to ZTE's)

4. Alcatel's one touch 906

Http://products.mobileuncle.com/thread-56405-1-1.html