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Skyline SK16-512 VoIP Gateway 16 Ports 512 SIM Cards Rotate to Reduce Blockage SIM Box

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Quick Details

Place of Origin: Guangdong China
Warranty: one year
Color: Black
Encryption: VOS3000,RC4,XOP.Base64
Model Number: SK GSM 16-512
Feature: IMEI change, base station change, Intercalling, Intersending
Power Supply: 100-240VAC, 50-60Hz IN, 12V/9A OUT
Brand Name: chinaskyline
Type: VoIP Gateway
Frequency: GSM: 850/900/1800/1900Mhz
SIP: SIP/2.0 RFC3261
Module: M26
Voice code: G729a/b/e, G723.1, G.711A/U law,iLBC
Packaging Detail: Carton package CBM: : 51*39*10cm G.W: 4.5KG
Selling Units: Single item
Single package size: 51X39X10 cm
Single gross weight: 9.0 KG
Skyline (Shenzhen) Technology Co., Ltd.
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Manufacturer, Trading Company
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On-time delivery rate
US$ 70,000+
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Skyline SK16-512 VoIP Gateway 16 Ports 512 SIM Cards Rotate to Reduce Blockage SIM Box

Product Description

 SK 16-512 GSM VoIP Gateway


SK 16-512 VoIP Gateway is a multi-functional and high performance product, which is designed with advanced embedded technology. SK 16-512 is able to process traditional voice call service, sms service and internet data service and adopt new hardware and software structure, which supports up to 16 concurrent calls, one port support 32 sims work rotate.


We have Live SMS Traffic to Australia, New Zealand, Canada, USA, UK, Iran, UAE, Vietnam, Bangladesh, Sigapore, Thailand, Pakistan and European regions. If you have sim cards and interested in sms business for huge profit, please contact me!!

Skype/Whatsapp: +8613542062020



 Model  2G GSM SK16-512 VOIP Gateway
 Number of Channels  16 channels(One port with 32 sim slots)
 Frequency  GSM: 850/900/1800/1900MHz
 SIP Specification  SIP/2.0 RFC3261
 Session Timer RFC4028
Network Protocols  DHCP/PPPoE/VPN(pptp)
 Telephony Features  Hot-line call ,Dial plan, Speed dial, Phone book, CDR, LCR,   White/Black list
  Telephony Signaling  DTMF tone dectection/generation
 DTMF relay: in-band, RFC 2833 and SIP info
 Call forward: unconditional, no answer and busy
 N-way conferencing
 Caller ID display/generation, Mobile Number Portability
 Voice Capability  Voice codecs:G729a/b/e,G723.1,G.711 A/U law, iLBC
 Echo cancellation
 Silence suppression & detection(VAD, CNG)
 Adaptive jitter buffer
 Volume adjustable
 IVR customized
 Number of Ports  1 WAN 10/100Base-T Ethernet(RJ-45 connector)
 1 Console(USB)
LEDs  1 Power and 16 groups of card online and running status indicator
Power Supply 100-240VAC, 50 - 60 Hz IN, 12V/8A OUT
Operating Environment Operating temperature: 0 - 50ºC
Operating humidity: 10 – 90%RH
Warranty 12 Months



Special Features:

• Support G729a/b/e,G723.1,G.711 A/U law, iLBC auto-selecting)

• Proxy Encryption Solution for IP Block

• Support SIM Bank

• VPN(pptp)

• SIM Card Rotating(SK16-512)

• Web Browser: Firefox/Chrome /IE/Opera

• ERMS(Skyline Remote Management System)






Solution to solve the SIM card blocked by:

• Accumulated Call Duration
• Accumulated Connected Calls
• Accumulated Calls
• Consecutive Failed Calls
• Consecutive No-Alert Calls
• Consecutive No-Answer Calls
• Consecutive No Carrier Calls
• Consecutive Short-Duration Calls
• Station intelligent switching
• Port Inter-Calling
• Fake Ring-back
• Call Duration Limitation for SIM Card/Single
• Dial Plan/Prefix Inward



Mobile Features:

• SMS Send, Receive and Forward(GSM/SIP/HTTP)

• SMS Inbox
• AT Command , USSD
• SMS Format: PDU/TXT
•  PIN Code Management
• CDMA Delay Answer
• GSM Polarity Reversal
• Carrier Selection
• Caller ID Hidden(need SIM Card support)




Maintenance and Management:

• Multi-language Interface
• USB Serial COM
• Configuration Backup and Restore
• Support HTTP/TFTP Upgrade
• Call statistics: ASR,ACD,PDD
• Skyline Remote Management System

Web Management of SK Gateway:
Packaging & Shipping



We can delivery the products to you once we confirm your payment !


Company Information

CHINA SKYLINE TELECOM CO.,LIMITED was founded in 2002.We have over 120 employees ,15 departments and more than 10 production lines.More than 200 companies have established business with us,and they are from 40 different countries.

Our company is a manufacturer of IP Phone, VoIP Gateways,GSM VoIP gateways, with well-equipped testing equipment and strong technical force. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in communication industry and other industries. Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs.

We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!


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Our Services

>We provide strong FREE tech support about gateways and VOS and A-Z termination. (6 days*12 hours)

>We can help you rent a VoIP server in USA.

>We can provide you with legal VOS.

>We can install Relay server, SMS server,SMB server for you(for free).

>We can offer voip terminal guide.

>We can buy your terminate routes and pay you 2 times in one week.

>We offer full tech support as long as your are runing.

>We can accept Payoneer Western Union, Money Gram, T/T, Wechat Pay, Ali Pay and Alibaba trade assurance order.


Q: 1 . How can I start voip business?

A: For voip business, you need devices , server , softwitch , sim cards and internet. our company can provide devices ,server and softswitch, like vos3000. Our tech team will help to set up your system to get calls.

Q : 2. If I face some issues about the devices , how can i solve it ?

A: All device has one year warrantly and we will provide you with tech support all time to fix your problems.

Q :3. If I use it for call terminal , but how can i find the traffic provider?

A:  We have A-Z traffic department to push traffic for you.
Q: 4.If my routes face the issue for quality not good , any solution ?

A: Firstly, you can check your internet, gsm signal, sim cards balance, sim blocking. Secondly, if everything is good, we will guide our engineer to help you check your configurations.
Q:5.I need more ports , any device ?

A: If your ports are less than traffic, you should increase more ports to accpet more traffic. We have 16-16, 16-64, 16-128, 32-32, 32-128, 32-256, 32-512 for you to expand your business.
Q:6 If i do not have skype ID , then how can i chat with you?

A: I have wechat and whatsapp. My account same is 008613542062020. Or you can call this number to contact me with voice call.
Q: 7 If i can not do the customs clearance , then what can i do ?

A: We do have the DVD Amplifier Case and it can pass 99% countries customs without customs issue. If you buy gateways to Pakistan and Bangladesh, we will handle the customs clearance and responsible for all risk.
Q:8  Quickly contact way ?
A: My skype ID: live:alisa_1657       Wechat/WhatsApp: +86 13542062020


Contact me


Any inquiry, please contact me freely.

 Skype: live:alisa_1657   WhatsApp/Wechat:008613542062020

AlisaSkyline SK16-512 VoIP Gateway 16 Ports 512 SIM Cards Rotate to Reduce Blockage SIM Box

Skyline SK16-512 VoIP Gateway 16 Ports 512 SIM Cards Rotate to Reduce Blockage SIM Box

Skyline SK16-512 VoIP Gateway 16 Ports 512 SIM Cards Rotate to Reduce Blockage SIM Box