Ready to Ship
Fast dispatch
In stock
Min. Order : 1 Piece
>=2 Pieces

Skyline Voip Gateway Pakistan SK16-256 Gsm Gateway 16 Port Gateway

Note: Please be cautious and check with your supplier if this product is for virus protection purposes and if the coronavirus (COVID-19) will affect your order.
Trade Assurance
Built-in order protection service in
Product quality
On-time shipment
More on shipping and other trade services.

Quick Details

Place of Origin: Guangdong China
Warranty: 1 Year
Support: AT, SMS,USSD,Voice
Channel: 16
Color: Black
Power supply: 100-240VAC
Encryption: VOS3000,RC4,XOP.Base64
Model Number: SK16-256 Gsm Voip Gateway
Weight: 7kg
Brand Name: SKYLINE
Function: IMEI change, base station change
Type: VOIP gateway
Frequency: 850/900/1800/1900MHz
Protocol: H.323/SIP
Selling Units: Single item
Single package size: 50X40X10 cm
Single gross weight: 8.0 KG
Package Preview:
Skyline (Shenzhen) Technology Co., Ltd.
Gold Supplier
Manufacturer, Trading Company
Response Rate
On-time delivery rate
US$ 80,000+
R&D staffs
Visit Store

Hot Selling Skyline Voip Gateway SK16-256 Gsm Gateway 16 Port Gateway


If you will use the device in Indonesia,Sri Lanka,Nigeria for call termination business,contact me for a big discount!

We suggest USA, Australia, Canada, Japan, Korea use 4G model because 2G is no longer working.
Contact me for more details! skype:williamskyline2/WhatsApp: +86 14749354635


Why choose SK gateway ?

A lot of clients now are complaining about the blocking issues. First, you may know why the Operator blocks you frequently? Second, what are the rules for the blocking? Third, how can we reduce it, even avoid it? There are some rules I have found out for you.


#1 Carrier detects the calls of its continuous minute. Once the SIM cards reach a certain continuous minute, SIM cards block.

Solution: Our SK smart gateways can be inserted 4 SIM cards each port and support the SIM cards making calls circularly itself. For this advantage, you can set when 1 SIM card reaches a certain continuous minute, then goes to next SIM card to make calls. Also, we can set it sending SMS more frequently to reduce the blocking.


#2 Carrier detects the IMEI No. of SIM cards and blocks it.

Solution: Our SK gateways can be set to change IMEI No. Automatically to avoid blocking issues.


#3 Carrier detects you SIM cards are abnormal. The explain is because the Operator affirms your SIM cards are not being used by a human, instead some certain devices.

Solution: On one hand, the SK gateways are designed with a function which copies a human’s behavior of using a SIM card and makes it look like a human is using it. On the other hand, the SK gateways also can copy a human’s behavior of sending SMS and making calls among the ports. All the functions can be set by the setting page of the SK gateways.


#4 Carrier detects if your SIM cards are making call according to the same base stations.

Solution: Normally, when people are making calls, our phones are searching for the best signal from the base stations and they will not always use the same base stations; they will move and change different base stations. According to this Operator’s blocking rules, our SK gateways can change different base stations to make calls, even if you’re making calls.


Product Description

1.SK series model:

SK32-128,device can read 128 SIMs in total. That means the device can support 32 SIMs working at one time (32 channels), and each channel can read 4 SIMs named A,B,C,D .


2.Our SK gateway special function:
#1. 16 channels
#2. sim rotation working
#3. auto-change the base station USSD to use more functions
#5. IMEI changeable
#6. Surpport SIP, H323 protocol, Remote Access
#7. Optional SMS termination
#8. Easy to install and administrate
#9. Auto Balance and Recharge
#10.Display card balance
#11.intercalling and intersms system VPN



GSM: 850/900/1800/1900MHz
4G :
FDD LTE: B1/B3/B5/B7/B8/B20
UMTS: B1/B5/B8
GSM: 850/900/1800/1900MHz
FDD LTE: B2/B4/B5/B12/B17
UMTS: B2/B4/B5
GSM: 850/1900MHz
TDD LTE: B38/B39/B40/B41
GSM: 900/1800MHz


4.Gateway software and hardware



5.How VOIP works:



Packaging & Shipping


Our Services

 For tech support : 

6*12 hour tech support team online ! Free tech support forever!

For aftersale service:

If you devices get issue within 10 days after received, send it back to us and we change a new device for you , we will bear all the shipping cost!

If device get issue in 10 to 2 months, send it back to us and  we fix for you , we will bear the sending cost  from our side !

 All devices can be fixed free in one year !


1.What is main funtion of the SK gateway:

For call/sms terminal(sms gateway only for sms terminal)


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

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


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

IPPBX and so on


4. What is the bandwidth requested by gateway?

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


5.What is the communication network can be supported by gateway?

we have gsm/3g/4g gateway,they can support gsm/3g/4g network respectively


6. 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.


7.What is our main express shipment?

DHL,UPS,FEDEX,TNT,EMS(can ship to anywhere all over the world)

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 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!we set up a new team for voice wholesale business two years ago.We are carrying more than Twenty Million minutes international outbound and inbound traffic monthly and owning 200+ interconnetions with Tier1 and Tier2 carriers.We mainly focus on Asia and Africa destinations and have more than 20 direct routes such as Pakistan,Vietnam ect.We treat every partner as our best friend because we insist on sincerity,trust and open-minded will be the key to the success for both parties.We sincerely welcome all VOIP interconnection.




Contact us

Feel Free Contact Us

Skype: williamskyline2

WhatsApp: +86 14749354635

WeChat: +86 13698469033


Hot Selling Skyline Voip Gateway SK16-256 Gsm Gateway 16 Port Gateway

Hot Selling Skyline Voip Gateway SK16-256 Gsm Gateway 16 Port Gateway

Hot Selling Skyline Voip Gateway SK16-256 Gsm Gateway 16 Port Gateway