Support Remote Control/VNP/SIM card unblocking / SK 32-128 VOIP GATEWAY

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Shipping fee:
Depends on the order quantity.
Lead Time:
5 day(s) after payment received
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
SK 32-128 GSM Gateway
VoIP Gateway
GSM Quad Band: 850/900/1800/1900MHz
32 Ports GSM Gateway
Sim Slot:
128 SIM Cards
SIP / H323 / TCP-IP / DUP...
Skyline Blue
Voice Codec:
G729 a/b/e,G723,G711 A/U law,iLBC
Power Supply:
100-240 VAC
VPN, Proxy Relay,
12 Months

Packaging & Delivery

Selling Units:
Single item
Single package size: 
50X50X12 cm
Single gross weight:
5.5 kg
Lead Time :
Quantity(Piece) 1 - 5 >5
Est. Time(days) 5 To be negotiated

Support Remote Control/VNP/SIM card unblocking / SK 32-128 VOIP GATEWAY

Skyline is a professional developer and manufacturer of VoIP products. Skyline provides SK brand VoIP communication devices and solutions. And we also offer customized products and OEM service. They are a cost-effective gateway for SOHO, SMEs and system integrators and it also opens up new revenue generating opportunities for service providers. 

SK 16 ports series is able to process traditional voice call service and internet data service,  which supports up to 16 concurrent calls.

SK16-16, SK16-64,SK 16-128, SK 16-256 support 16 calls at one time,which is different in the number of SIM cards it can insert. SK 16-16 can insert 16 SIMs while SK 16-64 can insert 64 SIMs at most,means 4 SIMs in one channel. Similarly, S 16-128 support 8 SIMs for each channel.

  • 32 Channel, Support 128 Sim Card in total. 1 channel 4 Sim card rotating, which can get rid of Sim card blocking efficiently.
  • Base Station Swich prevent Sim card blocking.
  • Changing SIM automatically protect Sim card from blocking.
  • Relay Encryption Solution fixed IP blocking.
  • VPN protect port from blocking
  • Sim card hot plug
  • Bandwidth Optimization enhance the communication quality
  • IMEI Change support
  • Intercall support
  • Human behavior support
  • Base Station change
  • Blacklist and whitelist
  • Call Interval time support
  • SMPP / http protocol support, open API for SMS
  • USSD / AT Command / DTMF / call wait / hotline / caller hide support



SK 32-128 

Numbers of Channel 


Numbers of SIM Support 


SIM Frequency 


Call Protocol 

SIP V2.0 RFC3261


Network Protocol 



Telnet, STUN




Operating Environment  

Built-in Cooling Fans

Power Input:100-240V~50-60Hz 1.2A MAX

Power Output:12V/5A

Working Temperature:0~+50°C

Working Moisture: 10 ~ 90 % RH



Other Specification  

Linux Operation(Safe & Stable)

HTTP Web Browser: Firefox/Chrome /IE/Opera

Caller Anonymous

Avoid FAS


Echo/Silence control

VOL control

32 Antennas










1.What is main funtion of gsm voip gateway?

 For call terminal

 2.What is the software can be supported by GoIP?

 VOS,VPS,VoIP switch,3CX,P·B·Xes,free PBX,MOR

 3. What is the hardware can be supported by GoIP?

 IPPBX and so on

4. What is the bandwidth requested by GoIP?

 It is up to your voice code.G723 need 23kbps per channel,G729 need 34kbps,
G711 need 90 kbps

 5. Is there any 16 ports or 128 ports GSM VOIP GATEWAY?

 Each gsm port need 30-45 kpbs upload,and for adsl's upload bandwith is 512 kpbs. 

 6.What is the difference between the new GoIP(antena bulit in)and the previous GoIP?

 The function is the same with the previous GoIP.The only difference is antena.

New GoIP antena is bulit in the board.

 7.What is the communication network can be supported by GoIP?

 GSM network

 8. How about our service?

 We have professional engineer to help you about all your tech problems anytime,the satisfaction of our customers is our greatest desire.

 9,What is our main express shipment?

ARAMEX,PK/BD special express,DHL,UPS,FEDEX,TNT,EMS(can ship to anywhere all over the world)






            SK 8-32                      SK 16-128                     SK 16-64                   SK 32-256