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Model | 4G SK32-128 VOIP Gateway |
Number of Channels | 32 channels |
Function | Both Voice and SMS business |
SMS Sening Speed | 4G 32 Port: 76800 SMS one hour 38400 MMS one hour 3G 32 Port: 57600 SMS one hour 28800 MMS one hour 2G 32 Port: 38400 SMS one hour 19200 MMS one hour |
Frequency | 2G GSM: 850/900/1800/1900MHz 3G WCDMA: 850/900/1800/1900/2100Mhz 4G LTE: TDD and FDD LTE |
Module Choice | 2G: Quectel M26 3G: Quectel UC20 4G: Quectel EC25 & EG91 |
SIP/2.0 RFC3261 | |
Session Timer RFC4028 | |
STUN | |
DHCP/PPPoE/VPN(pptp) | |
NTP | |
Telnet/HTTP/FTP/TFTP | |
Encryption:Skyline,VOS2000,RC4,XOP.Base64 | |
Telephony Features | Hot-line call ,Dial plan, Speed dial, Phone book, CDR, LCR, White/Black list |
DTMF 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 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 Ports | 1 WAN 10/100Base-T Ethernet(RJ-45 connector) |
1 Console(USB) | |
LEDs | 1 Power and 32 groups of card online and running status indicator |
Power Supply | 100-240VAC, 50 - 60 Hz IN, 12V/7.5A OUT |
Operating Environment | Operating temperature: 0 - 50ºC |
Operating humidity: 10 – 90%RH | |
Warranty | 12 Months |







Module | Frequency | Suitable for Countries or Regions |
EC25-E | LTE FDD:B1/B3/B5/B7/B8/B20 LTE TDD:B38/B40/B41 WCDMA:B1/B5/B8 GSM:B3/B8 | Europe, Middle East, Africa, Korea, Thailand, Pakistan, Southeast Asia |
EC25-EUX (EC25-EC) | LTE FDD: B1/B3/B7/B8/B20/B28A WCDMA: B1/B8 GSM: B3/B8 | Europe, United Arab Emirates, Asia |
EG91 | LTE-FDD:B2/B4/B5/B12/B13 WCDMA:B2/B4/B5 | USA(Verizon/AT&T/T-Mobile /U.S.Cellular) |
EC25-A | LTE FDD:B2/B4/B12 WCDMA:B2/B4/B5 | USA(T-Mobile, AT&T), Canada |
EC25-AFX | LTE-FDD:B2/B4/B5/B12/B13/B14/B66/B71 WCDMA:B2/B4/B5 | USA(Verizon/AT&T/T-Mobile/U.S.Cellular), Canada |
EC25-V | LTE FDD:B4/B13 | USA Verizon |
EC25-J | LTE FDD:B1/B3/B8/B18/B19/B26 LTE TDD:B41 WCDMA:B1/B6/B8/B19 | Japan |
EC25-AU | LTE FDD:B1/B2/B3/B4/B5/B7/B8/B28 LTE TDD:B40 WCDMA:B1/B2/B5/B8 GSM:B2/B3/B5/B8 | Australia, New Zealand, Latin America |


Trade Terms | FOB, CFR, EXW, DAP |
Payment Terms | Alibaba via Credit Card, Payonner, Payonner link via Credit Card, T/T, Webmoney, Skrill, Western Union, Cash |
Payment Condition | 100% deposit in adavance |
Delivery Time | 1-3 days after full payment |
Packing | Strong Carton Box with Water Proof |
Shipping | DHL, UPS, EMS, FEDEX, ARAMEX, TNT or Other Way As You Require |







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