Huawei B311-221 Router Manual
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Huawei B311-221 Router Manual

Product Overview

The HUAWEI LTE CPE B311-221 is a Long Term Evolution (LTE) wireless gateway for multiple users in household or small office environments. It enables users to access the Internet.

The B311-221 supports 3GPP Release 9 with UE downlink/uplink category 4. The supported service functions are as follows:

  • Data service up to DL 150Mbps (64QAM) and UL 50Mbps (16QAM)
  • Working band: LTE: B1/3/7/8/20/38, UMTS: B1/B8, GSM: B2/B3/B5/B8
  • Voice service: CS/ VoIP (Optional) / VoLTE (Optional)
  • Wi-Fi: 2.4 GHz 802.11b/g/n 2x2 MIMO up to 300Mbps. Maximum Users: 32
  • 1 GE port for LAN/WAN
  • Multi APN function (Optional) for Data, Voice (VoIP), TR-069 services
  • Routing mode: NAT enable (Default) / IP pass-through (Optional)
  • VPN client service (L2TP, PPTP)
  • Customer management via WebUI or HUAWEI SmartHome APP (iOS or Android)
  • Operator maintenance via TR-069 (Optional) and TR-143 (Optional)
  • Huawei Firmware Over the Air (HOTA)

Product Overview
Figure 1-1 B311-221 appearance

Technical Specifications

Hardware Specifications

Table 2-1 Technical specifications of the B311-221 main unit

Item Description
Technical standard WAN 3GPP Release 9
LAN IEEE 802.3/802.3u
WLAN IEEE 802.11b/g/n
Working band/frequency LTE B1/B3/B7/B8/B20/B38
GSM B2/B3/B5/B8
WLAN 2.402 GHz~2.482 GHz
External port
  • One power adapter port
  • One LAN/WAN port (RJ45), IEEE 802.3/802.3u
  • One phone port (RJ11)
  • One external LTE antenna ports (SMA)
  • One SIM card slot (Mini-SIM)
  • Built-in LTE/UMTS/GSM primary antenna
  • Built-in LTE/UMTS secondary antenna
  • Built-in WLAN 2.4 GHz antenna
LED Indicators
  • One power indicator (White)
  • One Internet status indicator
    Cyan: LTE network accessed
    Blue: UMTS network accessed
    Yellow: GSM network accessed
    Green: Ethernet network accessed
    Red: No SIM card is inserted or detected, or the SIM card has insufficient balance
  • One Wi-Fi/WPS/Hi indicator (White)
    Flash slowly: A pairable HiLink device is detected.
    Flash quickly: HiLink pairing is in progress.
    Off: Wi-Fi is disabled.
  • The indicator starts to flash slowly only when B311-221 detects a new HiLink device.
  • HiLink devices include Honor routers, Honor set-up boxes, Honor handsets (EMUI 5.0 and later), and more.
  • One LAN indicator (White)
  • One group of signal strength indicators (White)
  • One Power ON/OFF switch
  • One WPS/Hi button

The Wi-Fi indicator flashes slowly when the router detects a HiLink device. Press the WPS button to connect the HiLink device to the router's Wi-Fi.

When the Wi-Fi indicator is steady on, press the WPS button to enable WPS.

  • One Reset button
Maximum transmit power LTE B1/B3/B7/B8/B20/B38: 23dBm±2dB
UMTS B1/B8: 24dBm+1/-3dB
  • B2/B3: 30dBm±2dB
  • B5/B8: 33dBm±2dB
  • 802.11b: 13 dBm
  • 802.11g/n: 14.5 dBm
Receiving sensitivity LTE Band 1.4MHz
B1 -100 -97 -95.2 -94
B3 -101.7 -98.7 -97 -94 -92.2 -91
B7 -98 -95 -93.2 -92
B8 -102.2 99.2 -97 -94
B20 -97 -94 -91.2 -90
B38 -100 -97 -95.2 -94
  • B1: -106.7dBm
  • B8: -103.7dBm
GSM B2/B3/B5/B8: -102dBm
  • 802.11b: -85 dBm(11 Mbps)
  • 802.11g: -71 dBm(54 Mbps)
  • 802.11n: -69 dBm(65 Mbps)
Power consumption < 12 W
power supply
  • AC (input): 100V-240V 50Hz/60Hz
  • DC (output): 12V/1A
181 mm (Width) x 126 mm (High) x 36 mm (Deep)
Weight About 218 g (excluding the power adapter)
  • Working temperature: 0°C to 40°C
  • Storage temperature: -20°C to +70°C
Humidity 5% – 95% (non-condensing)
Certification/Compliance CE certification
Wi-Fi certification

Antenna Specifications

Build-in LTE Antenna

Table 2-2 LTE antenna specifications

Item Description
Frequency FDD LTE
  • B1: UL 1920–1980 MHz DL 2110–2170 MHz
  • B3: UL 1710–1785 MHz DL 1805–1880 MHz
  • B7: UL 2500–2570 MHz DL 2620–2690 MHz
  • B8: UL 880–915 MHz DL 925–960 MHz
  • B20: UL 832–862 MHz DL 791–821 MHz


  • B38: UL 2570–2660 MHz DL 2570–2660 MHz


  • B1: UL 1920–1980 MHz DL 2110–2170 MHz
  • B8: UL 880–915 MHz DL 925–960 MHz


  • B2: UL 1850–1910 MHz DL 1930–1990 MHz
  • B3: UL 1710–1785 MHz DL 1805–1880 MHz
  • B5: UL 824–849 MHz DL 869–894 MHz
  • B8: UL 880–915 MHz DL 925–960 MHz
Input impedance 50 Ω
Standing wave ratio < 3
Main antenna efficiency


  • B1: -1.5 dB
  • B3: -2.5 dB
  • B7: -2.5 dB
  • B8: -2.5 dB
  • B20: -2.5 dB
  • B38: -2 dB UMTS
  • B1: -1.5 dB
  • B8: -2.5dB


  • B5/B8: -2.5 dB
  • B2/B3: -2.5 dB
Diversity antenna efficiency


  • B1: -2.5 dB
  • B3: -2.5 dB
  • B7: -2.5 dB
  • B8: -3 dB
  • B20: -2 dB
  • B38: -2 dB


  • B1: -2.5 dB
  • B8: -3 dB
Main antenna gain


  • B1/B3/B7B8/B20/B38: 1~2 dBi


  • B1/B8: 1~2 dBi GSM
  • B5/B8: 1~2 dBi
  • B2/B3: 1~2 dBi
Diversity antenna gain LTE
B1/B3/B7/B8/B20/B38: 1~2 dBi
Polarization Linear polarization

Build-in Wi-Fi Antenna

Table 2-3 WLAN 2.4 GHz antenna specifications

Item Description
Frequency 2.402 GHz – 2.482 GHz (Channel 1 – Channel 13)
Input impedance 50 Ω
Standing wave ratio < 2
Efficiency -2 dB
Gain ≤3.8 dBi
Polarization Linear polarization

Software Specifications

Table 2-4 Software specifications

Item Description
LTE features DL 2x2 MIMO
Mobile network APN management
APN auto adapter
Gateway Router
  • Supports the default route:
  • Supports manual configuration of LAN IP addresses.
  • Supports Address Resolution Protocol (ARP).
DHCP server
  • The DHCP server can be enabled or disabled.
  • The address pool of the DHCP server can be configured.
  • The lease can be configured.
  • The DNS relay under the DHCP server can be enabled.
  • Supports NAT and NAPT (compliant with RFC2663, RFC3022, and RFC3027).
  • Supports cone NAT.

IPv4v6 dual stack
IPv6 only (Optional, CLAT for LAN side IPv4 device access Internet)
IPv4 only

When the CLAT function is enabled, the IPv4 device Internet access service cannot reach the maximum throughput. Under IPv6 only, NAT-base service (such as port forwarding and port triggering) is not available.

VPN pass-through
VPN client
  • Support L2TP VPN client
  • Support PPTP VPN client (Optional)
  • Writing/sending/receiving
  • Writing/sending/receiving extra-long messages
Data service
  • LTE FDD: DL 150Mbps, UL 50Mbps
  • DC-HSPA+: DL 42 Mbps, UL 5.76 Mbps
  • HSPA+: DL 21 Mbps (64QAM), UL 5.76 Mbps
  • HSPA: DL 14.4 Mbps, UL 5.76 Mbps
  • WCDMA PS: DL 384 Kbps, UL 384 Kbps
  • EDGE: DL 236.8Kbps, UL 236.8 Kbps
  • GPRS: DL 85.6 Kbps, UL 85.6 Kbps
WLAN 802.11b/g/n
Supports multi APNs (Optional, one for data, one for voice, and one for TR-069).
Voice VoIP
Supports G.711a/G.711u/G.726 (-24/-32)/G.722/G.729 codec.
Supports SIP (RFC3261).
Supports SDP (RFC2327).
Supports RTP/RTCP (RFC1889/RFC1890/RFC3550).
Supports in-band/SIP info/RFC2833 DTMF.
Supports the following phone features:
  • Caller ID generation
  • Call waiting
  • Call forwarding (unconditional, busy, and no answer forwarding)
  • Call hold
  • Three-way conference
CS Supports CS voice communication over UMTS and GSM networks.
Supports circuit switched fallback (CSFB).
Supports the following phone features:
  • Caller ID generation
  • Call waiting
  • Call forwarding (unconditional, busy, and no answer forwarding)
  • Call hold
  • Three-way conference
  • Originating Identification Presentation/Restriction
  • Outgoing Communication Barring
  • Supports AMR-NB codec
  • Supports AMR-WB codec
Supports SRVCC to UMTS
Supports SRVCC to GSM
Supports in-band/out-band (RFC2833) DTMF
Supports the following phone features:
  • Caller ID generation
  • Call waiting
  • Call forwarding (unconditional, busy, and no answer forwarding)
  • Call hold
  • Three-way conference
  • Originating Identification Presentation/Restriction
  • Outgoing Communication Barring
Firewall setup
  • Firewall enable/disable
  • URL filtering
  • LAN IP filtering
  • Port forwarding (Virtual server)
  • Port triggering (Special Application)
  • DMZ service
  • UPnP service
  • ALG settings
  • 10/100/1000 Mbps auto-negotiation
  • MDI/MDIX auto-sensing
  • IEEE 802.3/802.3u-compatible
WLAN Broadcasts and hides service set identifiers (SSIDs)
Complies with IEEE 802.11b/g/n
Encryption WEP, AES, and TKIP + AES
Security mode
  • Open
  • WPA2-PSK
  • WEP
MAC address
  • Supports the MAC address authentication whitelist.
  • Supports the MAC address authentication blacklist.
  • Supports a maximum of 10 MAC address entries.
  • Supports inquiry of STA status.
  • Supports a maximum of 32 connected stations.
Operator maintenance (Optional)
  • Supports TR-069 Amendment III
  • Supports TR-098 Amendment II
  • Supports TR-143 Amendment I
  • Supports TR-104 Amendment I (if VoIP is available)
USIM PIN management and USIM card authentication
NTP Supports daylight saving time (DST) (Optional).
Maintenance Supports export of current diagnosis results and operation logs.
  • View data traffic usage and SMS.
  • Manage connected devices.
  • Change CPE's SSID and password.
System requirements Operating system Windows 7, Windows 8, Windows 8.1, Windows 10 (Not support Windows RT), MAC OS X 10.9, 10.10, 10.11 and 10.12 with latest updates.
Web browser
  • Microsoft Internet Explorer 8.0 with latest updates. l FireFox 49.0 with latest updates.
  • All major versions of Chrome in the last year (53.0 with latest updates).
  • Safari 10.0 with latest updates (MACOS).
Your computer's hardware system should meet or exceed the recommended system requirements for the installed OS version.

Services and Applications

Data Services

The B311-221 can access the Internet through mobile networks and Ethernet networks. By connecting to the B311-221 using Wi-Fi or a network cable, users can obtain access to high-speed Internet services and establish a local area network (LAN).

Accessing the Internet through a Mobile Network


The B311-221 can access the Internet through mobile networks.

Accessing the Internet through a Mobile Network
Figure 3-1 Accessing the Internet through a mobile network

Accessing the Internet through an Ethernet Network

The B311-221's LAN/WAN port can be connected to a wall-mounted Ethernet port using a network cable.

Accessing the Internet through an Ethernet Network
Figure 3-2Accessing the Internet through an Ethernet network

Voice Services

The B311-221 provides one telephone port that can be connected to telephones for calling.

Voice Services - Connecting telephones
Figure 3-3 Connecting telephones to the B311-221


The B311-221 supports message writing/sending/receiving and group sending (up to 50 -contacts at a time).

Security Service

The B311-221 supports comprehensive and robust security services. It provides a firewall function and PIN protection mechanisms. These features allow users to connect their computers to the Internet and simultaneously protect their computers against security threats from the Internet.

Firewall Service

The B311-221 supports the enabling or disabling of a firewall on the network connection, which protects the device and network from attacks by hackers on the Internet and controls access to the Internet.

MAC Filtering

The B311-221 supports configuration of the Media Access Control (MAC) address to restrict network access.

Wi-Fi Authentication

The gateway supports the following user authentication protocols for WLAN:

  • No encryption

VPN Function

VPN Client

VPN tunneling involves establishing and maintaining a logical network connection (that may contain intermediate hops). On this connection, packets constructed in a specific VPN protocol format are first encapsulated within some other base or carrier protocol, then transmitted between the VPN client and server, and finally decapsulated on the receiving side.

The B311-221 supports L2TP and PPTP tunneling protocols.
VPN Client - L2TP and PPTP tunneling

VPN Pass-Through

The B311-221 supports L2TP/PPTP/IPsec VPN pass-through for the LAN side device. The LAN side device can create a VPN tunnel to the VPN server.
VPN Pass-Through

IP Pass-Through

The LTE CPE obtains the WAN IP address and passes it through to the PC (Case 1) or Router (Case 2), and then the PC (Case 1) or Router (Case 2) can directly use the WAP IP address.
IP Pass-Through

IPv6 Only and IPv4v6 Dual Stack

IPv4v6 Dual Stack

CPE provides dual stack function.
IPv4v6 Dual Stack function

IPv6 Only (CLAT)

The LTE CPE supports IPv6 only with the transition solution CLAT for IPv4 device.
IPv6 Only (CLAT) transition solution


When the IPv6 only (CLAT) function is enabled, NAT-based functions (like DMZ/Port Forwarding/Port tigger) cannot be used.

When an IPv4 device accesses the Internet, the performance is degraded because packets need to be packetized and unpacked. However, IPv6 devices are not affected.


The B311-221 supports the establishment and maintenance of three APNs. These three APN connections isolate data, voice, and remote management services on an operator's network.

The B311-221 supports an independent APN for CPE internal/VoIP/TR-069.

  • Supports up to two HiLink devices to connect to B311-221 through the WPS/Hi button to create an expanded network.
  • Supports quick connection between a HiLink device (such as Honor set-up boxes and Honor handsets running on EMUI 5.0 and later) and B311-221 through the WPS/Hi button.

Customer management


The B311-221 supports local configuration through the Web UI. You can perform device management and network configuration to ensure normal and stable performance.


Scan the QR code (can be found in the Quick Start Guide and Web UI) to download the HUAWEI SmartHome APP and configure the router from your phone.

Operator maintenance

The B311-221 supports Operator maintenance through the TR-069. Operator remote manages the CPE software update/parameters configuration via TR-069.
Operator maintenance


The B311-221 supports the HOTA feature, which allows users to remotely update the device firmware through the HOTA server.

System Structure and Scenario Constraints

System Architecture

System Architecture
Figure 4-1 System structure

The following describes the modules shown in Figure 4-1.

  • LTE access function: The B311-221 adopts the LTE access technology at the WAN side.
  • LAN access function: One 10/100/1000 Mbps high-speed Ethernet ports are provided at the LAN side. The B311-221 provides the switching function for local networking and sharing of the broadband network when it is connected to terminal devices.
  • AP function: An 802.11b/g/n-compliant WLAN AP interface is provided for wireless networking at home. The interface is compliant with the IEEE 802.11b/g/n standard and the WEP, WPA/WPA2-PSK, WPA2-PSK security authentication mechanisms.
  • DHCP/DNS: The DHCP server dynamically allocates IP addresses to PCs.
  • Web-based management: You can configure the B311-221 and modify and view the configuration of the B311-221.
  • IP routing protocol and NAT: The B311-221 has high-speed routing capability. With the built-in NAT, the B311-221, together with LTE terminals, can provide flexible broadband access solutions and networking schemes.
  • Voice function: The B311-221 supports voice services.

Scenario Constraints

The B311-221 is a household wireless broadband access product designed for use in scenarios with relatively few network access devices and relatively low network reliability requirements, such as homes or small office and home offices (SOHOs).

The B311-221 is not an enterprise-grade product. It cannot be used by medium- or large-sized enterprises or in scenarios with high network reliability requirements, such as banks, securities agencies, traffic control, and communications device backhaul.

The B311-221 has the following constraints:

  • When the IP Pass-Through mode is enabled, the HOTA function cannot be used.
  • When the L2TP/PPTP VPN client function is enabled, the throughput performance will slow down.
  • A maximum of 32 devices can be connected to the WLAN in theory; the actual number of devices that can be connected and served depends on actual conditions.

Technical References

Standards and Communication Protocols

Standards and Communication Protocols of the Product

Table 5-1 Standards and communication protocols of the product

Item Description
Physical layer RFC894
IP RFC791, RFC1122, RFC1071, RFC1141, RFC1624, RFC792, RFC950, RFC1256
ICMP RFC792, RFC950, RFC1256
DHCP RFC1531, RFC1533
NAT RFC1631, RFC2663, RFC3022, RFC3027
VoIP RFC3261,RFC2327,RFC1889,RFC1890,RFC3550

Standards and Communication Protocols of the Wireless Uu Interface

This device supports 3GPP Release 9.

Packing List

Table 6-1 Packing list

Description Quantity Remarks
Wireless Gateway 1 Standard
Power supply adapter 1 Standard
Quick Start 1 Standard
Ethernet cable 1 Optional
Warranty card 1 Optional
Phone cable 1 Optional

The HUAWEI B311-221 wireless gateway has an optional external antenna.

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Huawei B311-221 Router Manual


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