SL-821G

Optical port

ITU-T G.984 GPON standards，Flexible mapping between GEM Port and TCONT

Optical connector

SC/UPC

Receiving Sensitivity

-27dBm

Overload optical power

-8 dBm

Transmitting Optical Power

0.5~5dBm

Transmit rate

2.488Gbps downstream; 1.244Gbps upstream

Wavelength

Receiving（DOWN）:1490nm；Transmitting（UP）:1310nm

User Network Interface（UNI）：4GE+1POTS+2.4G&5G WIFI+2USB

Ethernet Port

• Ethernet port-based VLAN tags and tag removal

• VLAN transparent transmission

• Q-in-Q

• MAC address learning

• Auto-adaptive 10 Mbit/s, 100 Mbit/s or 1000 Mbit/s

POTS Port

• SIP/H.248

• Call waiting, Inconditional Call Forward, Call Forward if Busy,Call Forward if no reply and Three-party calls.

• G.711A/U, G.729 and G.722 encoding/decoding

• T.30/T.38/G.711 fax mode

• SDP protocol (RFC 2327 and RFC 4566)

• DTMF

WLAN

• IEEE 802.11 b/g/n (2.4G)

• IEEE 802.11 a/n/ac (5G)

• 2 × 2 MIMO (2.4G&5G)

• Antenna gain: 5 dBi，double external antenna

• 2.4G&5G concurrent

• Air interface rate:300 Mbit/s (2.4G); 867 Mbit/s(5G)

• WMM

• Multiple SSIDs  

• WPS

USB port

• USB2.0，USB backup

• FTP-based network storage

• File/Print sharing based on SAMBA

• DLNA DMS/UPnP AV (media server） 

Product Function

GPON

• ITU-T G.984.1-4

• ITU-T G.988

• 32 TCONTs /256GEM ports

• 8 Egress queues per TCONT at least

• VLAN or VLAN plus priority gem mapping mode  

• SN/LOID/LOID+Passowrd authentication

• Performance monitoring: eth/Gem port

• Dying gasp

Layer 2 Features

• MAC learning (SVL)/aging

• Support max frame length to 1518 bytes

• VLAN tagging for untagged packets

• Support VLAN 1-4094

• VLAN transparent/translation

Layer 3 Features

• PPPoE/Static IP/DHCP/Bridge

• NAT/NAPT

• Port forwarding

• ALG, UPnP

• DDNS/DNS server/DNS client

• IPv6/IPv4 dual stack,and DS-Lite

• Static/Dynamic/Default routes

• Multiple services on one WAN port

• RIPv2 with passive mode

Multicast

• IGMP v2 (RFC 2236) and IGMP v3 (RFC 3376)

• IGMP snooping and IGMP Proxy

• MLD v1/v2

Qos

• Support 8 Queues with Strict Priority

• Ethernet port rate limitation

• 802.1ppriority

• SP/WRR/SP+WRR

• Service flow classification

Security

• Firewall

• MAC/Port/URL Filter

Management

• OMCI/TR069

• Web UI（Http by LAN-Side and WAN-Side）

• Telnet（Telnet by LAN-Side and WAN-Side）

Physical Performance

Dimensions (H x W x D)

3.3CM*17CM*16.5CM(without external antenna and pads)

Weight

About 300g

Working temperature

0°C ~ 40°C

Working humidity

5% RH to 95% RH (non-condensing)

Power adapter input

100–240 V AC, 50 / 60 Hz

System power supply

12V DC, 1.5 A

Power consumption

<15W

System Configuration

Main chip

ZTE ZXIC ZX279128，800MHz Dual core

ZTE ZXIC ZX279128S，1GHz Dual core

RAM

512MB DDR3

Flash

256MB NAND

WiFi Chip

MTK MT7603EN（2.4G ）MT7612EN/MT7613AEN/MT7613BEN（5G）