Feature:1. [Good Performance] S01 4G fixed phone is a multi function communication terminal, which is used for enterprise internal expansion and network IP phone operation network, with Internet access rights, and can be connected to the operator 4G network.2. [Support 4G, VOIP] Wireless phone supports 3 SIP lines, and accounts can be switched freely. Support dual 4G cards, can insert 2 SIM cards (not included). Support 4G and VOIP calls at the same time, when either party is connected, the other party can also call in.3. [Network Sharing] Plug in the 4G card (not included) on the telephone and turn on the mobile network, and connect with the computer that is not connected to the Internet through the network cable. The computer can use the shared network of the phone to surf the Internet.4. [Hotspot Sharing] Turn on the WIFI function of the wireless landline, find the signal quickly and easily, and connect to the network. Use 4G card data to turn on portable WLAN hotspots, other devices can quickly and easily find hotspot signals.5. [Multi Function] VOIP telephone supports call transfer, in the process of making or answering calls, you can easily click the transfer button. With the call on hold, press the call hold key, the call will not end, press the key again, the call will continue.6. [Easy To Use] Landline supports voice messages, voice message reminders, and you can view voice messages at any time. With DND and phone functions, it is easy to add, delete contacts, answer automatically, etc. 2.4 inch color screen design, strong color perception, clear display.Specification:Item Type: VOIP PhoneMaterial: ABSModel: S01SIM Card: Support Standard SIM Card (Not Included), 2 x Card SlotLCD Display: 2.4 Inch Color ScreenKeys: 3 x 4 and 25 KeysWIFI: Support 802.11b/g/nCharging Interface: Micro USB Charging InterfaceInput: 5V/1ANetwork: 4G Full NetcomFrequency: FDD LTE: B1, B3, B7, B20, B28ATDD LTE: B38, B39, B40, B41WCDMA: B1, B2, B5, B8GSM: B2, B3, B5, B8BT: 4.0Battery: 1000mAh Li Ion Battery (Included)Plug: 100-240VFast Dial: M1 to M3, 2 to 9 Numeric KeysPhonebook: Support 500 ContactsCall Records: Support 50 RecordsVoicemail: Reminder of Unread VoicemailsPhone Function: Add, Delete Contacts, Missed Call Alert, Do Not Disturb, Automatic Answer, Call Transfer, Busy Transfer, Unconditional TransferVOIP Parameters:SIP Protocol: SIP 2.0 (RFC3261)Transport Protocol: UDP, TCP, TLSSupport 3 Way SIP AccountDTMF Capabilities: RFC 2833 and SIP INFOSound Codec: G.722, G.729, AMR, AMRWB, GSM, PCMAPCMU, SPE EX, ILBC, DTMF, ISACWB, for OPUSSound Functions: AEC, AD, CNG, AGC, ANS3GPP: TS 24.605Call Forwarding: SupportStun: SupportSIP Lines: 3 LinesIntroduction: S01 4G fixed telephone is a multi functional communication terminal, which is a VOIP terminal product with strong practicability and strong manageability for IP network voice communication. It can be used for extended and network IP telephony operation networks within the enterprise and has Internet access. It can be connected to the operator 4G network, and with the support of the operator, the communication cost is extremely low. It can also be used as a communication tool, is cost effective, has high stability, and is most compatible with traditional usage habits in various private networks..Package List:1 x VOIP Phone1 x Earpiece1 x Earpiece Cable1 x Bracket1 x Micro USB Charging Cable1 x Power Adapter1 x Manual