Before buying,pls check carefully the frequency and function,if you not find the url of the product which you want to buy,pls contact me freely!

Modem pool connect with Computer via usb 2.0 interface ,

   Download driver ,

   Install software ,

   Then can process Sms sending / Receiving .

   Sms software we can provide to you or can work with customer sms software

SL 808X MODULE

The SL808x (SL8080/81/82/83/84/85) is a 74-pin soldered-down module based on the Intel pin-out specification proposal for the standard JEDEC LGA packaging form factor. Its wireless UMTS-based modem provides data connectivity for eBooks, portable navigation devices, mobile Internet devices, point-of-sale devices, industrial handhelds, and other machine-to-machine and vertical applications over the following frequency bands:
UMTS (WCDMA) /HSDPA
SL8080/81: 850 MHz, 1900 MHz
SL8082/83: 900 MHz, 2100 MHz
SL8084/85: 850 MHz, 2100 MHz
GSM, GPRS, EDGE
850 MHz, 900 MHz, 1800 MHz, 1900 MHz
GPS (SL8080/82/84)
1575.42 MHz
The SL808x modem supports data operation on HSDPA, WCDMA, 
EDGE, and GPRS networks. The SL8080/82/84 modems also 
support voice operation on these networks.

Electrical features
Single supply voltage (VCC)—3.3V–4.3V

Two-piece, self-shielded (frame and lid)—No additional shielding required

Short Message Service (SMS) features
Send and receive (mobile originate and mobile terminate)
 Mobile-originated / terminated over CS and PS channels
 Mobile-originated SMS over PS falls back to CS if PS service is not available, or there is a PS network failure.
New message notification
Message sorting
Multiple recipients
Return voice call
Save contact details
Mobile-originated SMS e-mail
Mobile-originated / terminated SMS concatenation
Mobile-originated SMS e-mail concatenation
Receipt notification

Application interface features
NDIS NIC interface support (Windows XP, Windows Vista, Windows 7, 
Windows CEa, Linux)
Multiple non-multiplexed USB channel support
Dial-up networking
USB selective suspend to maximize power savings
AT command interface—(non-voice) 27.007 standard, plus proprietary 
extended AT commands
CnS—proprietary Control and Status host interface 
protocol
Software Development Kits (SDK) including APIs (Application 
Program Interfaces) and drivers (core, device) for Windows, Windows 
CE, and Linux
Optional eSIM support

Network selection

Network selection procedures described in 3G 22.011, R5 (June 
2005), 3G 23.122 (June 2005), and 3G 43.022, R4
RRC connection reject message to redirect from a 3G system to a 2G 
system, according to 25.331, R5 (June 2004)
A CPHS Customer Service Profile-like feature [PLMN Mode bit] on a 
USIM / SIM that hides network selection related menus
Initial HPLMN scan at two minutes after power on
An HPLMN rescan irrespective of the serving MCC
Selective disabling of any 2G or 3G frequency band
Equivalent PLMN
Network selection generally within 30 seconds of power up
Enhanced network selection (ENS)

RF features
Quad-band GSM/GPRS/EDGE (850 MHz, 900 MHz, 1800 MHz, 
1900 MHz)
Dual-band UMTS WCDMA FDD
· SL8080/SL8081: 850 MHz, 1900 MHz
· SL8082/SL8083: 900 MHz, 2100 MHz
· SL8084/SL8085: 850 MHz, 2100 MHz
GPS (1575.42 MHz) (SL8080/82/84 only)

Advantages:

1. Industrial design, can restart automatically when no signal or crash
2. Independent switch control for every port
3. Every port can demount separately , easy to maintain
4. 8 ports data lines integrated, convenient and beautiful
5. Voice frequency input and output independently for each port, supports

    access to microphone and sound

Pictures shows

The Device Works:

*8 ports modem pool

*Power cable

*Antenna

*USB cable

*CD driver

Shipping:

Important: Brazil & Mexico Customers, Please leave your TAX number (CPR/GST/RFC/CFT/CPF) after you placed the order.

1. All orders will be shipped within the promised processing time.

2. We DON'T bear any Tax, V.A.T duties or Remote Area Fee.

3. To help buyers minimize or avoid these duties and fee, we will write “ Gift or Sample or PC modem ” at USD40-50/pc unit value price on invoice. If you have any suggestion, please leave a note in order.

4. Customs Tax should be paid by buyer, Seller can not support any Customs Tax.

5. Extra money will be charged for order with remote area, please check it before ordering.

Delivery Time:

SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.

Import duties .taxes and charges are not included in the item price or shipping charges .these charges are the buyer’s responsibility .please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying