16 Ports VOIP Gateway Equipment Support SIM Card For Call Termination

SK 16-16 16-64 16-128 16-256 products introduction: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 USSD2. Support automatically detect the ACD ASR3. Support automatically detect the SIM card issue 4. Save your internet bandwidth ,15kb/s for 1 call5. Including the SIMBANK feature of avoiding the SIM card blockedSpecial Features:ModelSK16-16 / SK16-64 / SK16-128 / SK16-256Number of Channels16 channelsFrequencyGSM: 850/900/1800/1900MHzCDMA:800/1900MHzWCDMA:850/900/1800/1900/2100MHz4G :      EC20-E      FDD LTE: B1/B3/B5/B7/B8/B20      UMTS: B1/B5/B8      GSM: 850/900/1800/1900MHz      EC20-A      FDD LTE: B2/B4/B5/B12/B17      UMTS: B2/B4/B5      GSM: 850/1900MHz      EC20-C      FDD LTE: B1/B3/B8      TDD LTE: B38/B39/B40/B41      TDSCDMA: B34/B39      UMTS: B1/B8      GSM: 900/1800MHzSIP SpecificationSIP/2.0 RFC3261Session Timer RFC4028STUNNetwork ProtocolsDHCP/PPPoE/VPN(pptp)NTPTelnet/HTTP/FTP/TFTPEncryption:Security,VOS2000,RC4,XOP.Base64Telephony FeaturesHot-line call ,Dial plan, Speed dial, Phone book, CDR, LCR, White/Black listTelephony SignalingDTMF tone dectection/generationDTMF relay: in-band, RFC 2833 and SIP infoCall forward: unconditional, no answer and busyN-way conferencingCaller ID display/generation, Mobile Number PortabilityVoice CapabilityVoice codes:G729a/b/e,G723.1,G.711 A/U law, iLBCEcho cancellationSilence suppression & detection（VAD, CNG）Adaptive jitter bufferVolume adjustableIVR customizedNumber of Ports1 WAN 10/100Base-T Ethernet (RJ-45 connector)1 LAN 10/100Base-T Ethernet(RJ-45 connector)1 Console(USB)LED1 Power and 16 groups of card online and running status indicatorPower Supply100-240VAC, 50 - 60 Hz IN, 12V/5A OUTOperating EnvironmentOperating temperature: 0 - 50ºCOperating humidity: 10 – 90%RHWarranty12 MonthsMobile 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