EC20 EC21 EC25 Bulk SMS Machine 4G LTE FDD GSM gateway 32 Port GSM Modem Pool

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$9.00 - $2,299.00 / Pieces | 1 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China
Brand Name:
Model Number:
EC25 EC20 EC21
Wireless, Modem pool
Interface Type:
Transmission Rate:
Products Status:
EC25 EC20 EC21
1 Year
Network Type:
4g Modem Pool
Product name:
Bulk sms modem
Change IMEI
Sms Broadcast System
Supply Ability
Supply Ability:
888 Piece/Pieces per Month modem pool
Packaging & Delivery
Packaging Details
Neutral packing

Hot sale Quectel EC20-A/C/E/CE Bulk SMS Machine 4G LTE FDD GSM gateway 32 Port GSM Modem Pool


Product Description


Product Show







4G LTE FDD Modem

Module  (Optional)(1) Quectel EC20 
(2) Quectel EC21
(3) Quectel EC25
Interface(Optional)(1) RS232 +Min USB


(2) RJ45 + RS232 + Min USB

Working Frequency


(1)EC20 -E     FDD LTE: 850/800/900/1800/2100/2600 MHz
                        UMTS:  850/900/2100 MHz
                        GSM: 850/900/1800/1900MHz
(2)EC20 -A     FDD LTE: 700/850/1700/1900 MHz
                        UMTS: 850/1700/1900 MHz
                        GSM: 850/1900MHz
(3)EC20 -C     FDD LTE: 900/1800/2100 MHz
                        TDSCDMA 1900/2100 MHz
                         UMTS: 2100 MHz
                         GSM: 900/1800MHz
(4)EC20 -CE    FDD LTE: 1800/2100 MHz
                         TDSCDMA: 1900/2100 MHz
                         WCDMA:  2100 MHz
                         GSM: 900/1800MHz

(1)EC21 -E      FDD LTE: 800/850/900/1800/2100/2600 MHz
                         WCDMA:850/900/2100 MHz
                         GSM: 900/1800 MHz

(2)EC21 -A      FDD LTE:700/1700/1900 MHz
                         WCDMA: 850/1700/1900 MHz
                         GSM: 900/1800MHz

(3)EC21 -V      FDD LTE: 700/1700 MHz
(4)EC21-AUT   FDD LTE: 700/850/1800/2100/2600 MHz
                          WCDMA: 850/2100MHz
(5)EC21-AUTL FDD LTE: 700/1800/2600 MHz

(1)EC25 -E       FDD LTE: 850/800/900/1800/2100/2600 MHz
                          WCDMA: 850/900/2100MHz

(2)EC25 -A       FDD LTE: 700/1700/1900MHz
                          WCDMA:  850/1700/1900MHz
                          GSM: 900/1800MHz
(3)EC25 -V       FDD LTE: 700/1700 MHz
(4)EC25 -AUT   FDD LTE: 700/850/1800/2100/2600 MHz
                           WCDMA: 850/2100MHz




Advantage 1 = BUlK SMS



Mutil port sms gateway SMS per hour= 900pcs/hour *32 ports =14400 pcs sms per hours

With a very stable and such a big SMS sending capability that you can easily to start your business campain /election campain/our community notification for any activity .



There are two kinds of BULK SMS Software (Optional)


ItemSoftware NamePriceProduct
1Caster SoftwareFree Download Software from the website
2Premuim SoftwareAdditional money



(1)Picture- Caster Software 



(2)Picture- Premuim Software






Advantage 2= STK / USSD Mobile recharge

Function= Top Up / Mobile Recharge + Check Balances

STK consists of a set of commands programmed into the SIM which define how the SIM should interact directly with the outside world and initiates commands independently of the handset and the network. This enables the SIM to build up an interactive exchange between a network application and the end user and access, or control access to, the network. The SIM also gives commands to the handset such as displaying menus and/or asking for user input.


USSD is commonly used by prepaid GSM cellular phones to query the available balance. The vendor's "check balance" application hides the details of the USSD protocol from the user. On some pay as you go networks, such as Tesco Mobile, once a user performs an action that costs money, the user sees a USSD message with his or her new balance. USSD can also be used to refill the balance on the user's SIM card and to deliver one time passwords or PIN codes.



Advantage 3= Change IMEI


What is "IMEI"? 


"IMEI "is a abbriviation  for "International Mobile Equipment Identity ",International Mobile Equipment identification number is by the 15 of digits "electronic string of number",and this code is the world's only. Each a mobile phone in after the completion of the assembly will be given a global only a group of number, the number from production to delivery will be took record.


Why need to change "IMEI" ?


 When you use the modem pool for SMS too much ,due to the operator policies,your device will be blocked  .World of operators will be same condition ,So if u want a SMS competition business,IMEI changing function is very needed



Packing List


(1)  1x modem pool

(2)  1x USB cable

(3)  1x Power Adapter

(4)  1x CD

(5)  32 x Antenna




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Company Information

HK BAILING (Hongkong Bailing International Co., Ltd), Located in Shenzhen,China,specializing in M2M Modules and Terminals , bulk sms modem,alarm system enable always-on cellular communications for virtually any IoT or M2M applicationa, bulk sms/voice/calls device and security system. Their rugged design, unparalleled engineering and manufacturing standards make them reliable in the most extreme environments and over the long life of your M2M solution and bulk sms/voice/calls broadcast system and security system.




Ann Chen

Skype: hkbailingjia

Whatsapp:  +8613631630091

Wechat/QQ: 2228318399