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,SK16-128,SK16-256 support 16 calls at one time,which is different in the number of SIM cards it can insert. SK16-16 can insert 16 SIMs while SK16-64 can insert 64 SIMs at most,means 4 SIMs in one channel. Similarly ,SK16-256 support 16 SIMs for each channel.pls check as follow pic:

16 ports with 16 SIMs GSM VOIP Gateway:

16 ports with 64 SIMs GSM VOIP Gateway:

16 ports with 128 SIMs GSM VOIP Gateway:

16 ports 64/128/256 slots gateway  's new functions:

1. Support IMEI change automatic and support USSD

2. Support automatically detect the ACD ASR

3. Support automatically detect the SIM card issue

4. Save your internet bandwidth ,15kb/s for 1 call

5. Including the SIMBANK feature of avoiding the SIM card blocked

Special Features:

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

Remote Management System

China Skyline Telecom Co., Ltd. was founded in 2007. Focus on the communications industry for more than 10 years. We have over 120 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.

Well trained tech supports and after-sales specialist, professional sales team, all employees working hard on providing good service to all our clients.

 Also we focus on international wholesale voice business. Thanks to strong relationship with voice retail partners, more than 1000 VoIP providers has been connected with us in the past few years.  SKYLINE has built direct interconnections with Tier1 telecom operators over the world to carry our stable traffic, especially for Asia, Middle East and Africa destinations. With flexible payment terms, strong finance background, competitive rate and 10 years’ VOIP operation experience, we welcome more IP voice interconnections. 

We insist on sincerity, trust and open-minded will be the key to the success for both parties. We sincerely welcome all VOIP interconnection. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!

  Q: 1 . How can I start voip business?
A: For voip business , you need devices , server , softwitch , 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 warrantly , 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 does traffic business , so for Pakistan , Bangladesh,Vietnam ,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 
Q:5.I need more ports , any device ?
A: Yes ,dear , for sk gsm device , we have sk gsm32-128 , also we have goip32. ,new SK GSM32-256 arrival