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Hot sale 32/32 Ports Anti sim blocking Cheaper VOIP Gateway support Voice and Bulk SMS

$1,420.00 / Set | 1 Set (Min. Order)
- + Sets available
0piecesselected, US $in total
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Shipping fee:
Depends on the order quantity.
Lead Time:
7 day(s) after payment received
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Quick Details
Place of Origin:
Guangdong, China
Brand Name:
China Skyline
Model Number:
VoIP Gateway
1 Year
GSM: 850/ 900/ 1800/ 1900Mhz
IMEI Change
Power supply:
100% Original Brand
voice code:
G729a/b/e, G723.1, G.711A/U law,iLBC
32 ports with 32 sim cards

Packaging & Delivery

Selling Units:
Single item
Single package size: 
50X38X10 cm
Single gross weight:
5.000 kg
Package Type:
Original Packaging
Picture Example:
Lead Time :
Quantity(Sets) 1 - 2 >2
Est. Time(days) 7 To be negotiated

32/32  Ports VOIP Gateway Cheaper VOIP Gateway SIP Gateway Products

Product Description


SK Gateway is a multi-functional and high performance product, which is designed with advanced embedded technology. SK Gateway is able to process traditional voice call service and internet data service. It adapt new hardware and software structure, which supports up to 32 concurrent calls and perfectly support G729a/b/e, G723.1, G.711 A/U law and iLBC codecs at the same time.


SK32-32, SK32-128,SK32-256,SK32-512 support 32 calls at one time,which is different in the number of SIM cards it can insert. SK32-32 can insert 32 SIMs while SK32-128 can insert 128 SIMs at most,means 4 SIMs in one channel.SK32-256 can insert 256 SIMs at most,means 8 SIMs in one channel. Similarly, SK32-512 support 16 SIMs for each channel.


Special Features:


ModelSK32-32 / SK32-128 / SK32-256/SK32-512
Number of Channels32 channels
FrequencyGSM: 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 
FDD LTE: B1/B3/B8 
TDD LTE: B38/B39/B40/B41 
UMTS: B1/B8 
GSM: 900/1800MHz
SIP SpecificationSIP/2.0 RFC3261
Session Timer RFC4028
Network ProtocolsDHCP/PPPoE/VPN(pptp)
Telephony FeaturesHot-line call ,Dial plan, Speed dial, Phone book, CDR, LCR, White/Black list
Telephony SignalingDTMF 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 CapabilityVoice 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 Ports1 WAN 10/100Base-T ethernet(RJ-45 connector)
1 LAN 10/100Base-T ethernet(RJ-45 connector)
1 Console(USB)
LEDs1 Power and 32 groups of card online and running status indicator
Power Supply100-240VAC, 50 - 60 Hz IN, 12V/5A OUT
Operating EnvironmentOperating temperature: 0 - 50ºC
Operating humidity: 10 – 90%RH
Warranty12 Months



Relay Encryption Solution(Fix IP Blocking)

Bandwidth Optimization

SIM Rotating Automatically(Fix SIM Blocking)

Base Station Switch

SIM Hot Plugging

Remote Control(Manage Device Anywhere)

Muti-Codec Support)

SMS Receive & Send


Mobile Features:

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

SMS Inbox

AT Command , USSD


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

Remote Management System 


Packaging & Shipping


Our Services

For tech support : 

6*24 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 !

 Note:  We have A-Z live traffic  ,we can buy your route !





Company Information

 China Skyline Telecom Co., Ltd. was founded in 2007. Focus on the communications industry for more than 10 years. We have over 150 employees, 15 departments and more than 10 production lines. More than 200 companies from over 60 different countries have established business with us. Our company is a manufacturer of VoIP Gateways, GSM VoIP gateways, Industrial Routers… with well-equipped testing devices 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.




Q: 1 . How can I start voip business?

A:  For voip business , you need devices , server , softswitch , sim cards and internet ; and our company can provide devices ,server and softswitch like vos3000.

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

A:  The device has one year warranty , and also we provide good service , tech free but strong support.

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



A: Our company also deal traffic business , so for Pakistan , Bangladesh,India,Afghan,Ethiopia and so on , we can provider the traffic.

Q: 4.If your routes facing the issue for quality not good , any solution ?

A:Dear , i can suggest you some solution for the good quality , also you can use our device for the high asr and acd .




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