HT841 Specifications

Telephony Interface

• 4 × RJ11 FXO ports
• 1 × RJ11 FXS port

Network Interface

• Two (2) 10/100/1000Mbps RJ45 ports
• One port supports 802.3af PoE-PD
• Up to 1000Mbps in Bridge mode
• Up to 100Mbps in NAT mode

LED Indicators

• POWER
• NET1
• NET2
• FXS
• FXO

Factory Reset Button

• Yes

Telephony Features

• Caller ID display/block
• Call Waiting
• Call Transfer (Blind & Attended)
• Call Forward
• Hold
• Do Not Disturb
• 3-Way Conference

Voice Codecs

• G.711 (Annex I & II)
• G.723.1
• G.729
• G.726-32
• iLBC
• Opus
• Dynamic Jitter Buffer
• Advanced Line Echo Cancellation

Fax over IP

• T.38 Group 3 Fax Relay (Up to 14.4 kbps)
• Auto-switch to G.711 Fax Pass-through

Ring Load

• 3 REN
• Up to 1km on 24 AWG

Caller ID

• Bellcore Type 1 & 2
• ETSI
• BT
• NTT
• DTMF-based CID

Dial Methods

• DTMF
• Pulse

Disconnect Methods

• Busy Tone
• Polarity Reversal/Wink
• Loop Current

Network Protocols

• TCP/IP
• UDP
• RTP/RTCP
• HTTP/HTTPS
• ARP/RARP
• ICMP
• DNS
• DHCP
• NTP
• TFTP
• SSH
• Telnet
• STUN
• SIP
• SIP over TCP/TLS
• SRTP
• SNMP
• TR-069
• IMS/3GPP
• IPoE

QoS

• Layer 2 (802.1Q VLAN, SIP/RTP 802.1p)
• Layer 3 (ToS, DiffServ, MPLS)
• Traffic Shaping

DTMF Method

• In-audio
• RFC2833
• SIP INFO

Provisioning & Control

• HTTP
• HTTPS
• TFTP
• SSH
• TR-069
• AES Encrypted Auto Provisioning
• Syslog

Security

• Media: SRTP
• Control: TLS / SIPS / HTTPS

Management

• Syslog
• Telnet
• SSH
• Remote Web Management

Power

• PoE Input: 48V / 0.5A
• DC Input: 12V / 1A

Environmental

• Operating: 32°–104°F (0°–40°C)
• Storage: 14°–140°F (-10°–60°C)
• Humidity: 10–90% (Non-condensing)

Dimensions

• 190 × 100 × 28 mm (L × W × H)

Weight

• 0.46 kg

Package Contents

• HT841 Gateway
• Ethernet Cable
• Quick Installation Guide
• (Power Supply Not Included)

Compliance

• FCC
• CE
• RCM
• IC
• UKCA

HT881 Specifications

Telephony Interface

• 8 × RJ11 FXO ports
• 1 × RJ11 FXS port

Network Interface

• Two (2) 10/100/1000Mbps RJ45 ports
• One port supports 802.3af PoE-PD
• Up to 1000Mbps in Bridge mode
• Up to 100Mbps in NAT mode

LED Indicators

• POWER
• NET1
• NET2
• FXS
• FXO

Factory Reset Button

• Yes

Telephony Features

• Caller ID display/block
• Call Waiting
• Call Transfer (Blind & Attended)
• Call Forward
• Hold
• Do Not Disturb
• 3-Way Conference

Voice Codecs

• G.711 (Annex I & II)
• G.723.1
• G.729
• G.726-32
• iLBC
• Opus
• Dynamic Jitter Buffer
• Advanced Line Echo Cancellation

Fax over IP

• T.38 Group 3 Fax Relay (Up to 14.4 kbps)
• Auto-switch to G.711 Fax Pass-through

Ring Load

• 3 REN
• Up to 1km on 24 AWG

Caller ID

• Bellcore Type 1 & 2
• ETSI
• BT
• NTT
• DTMF-based CID

Dial Methods

• DTMF
• Pulse

Disconnect Methods

• Busy Tone
• Polarity Reversal/Wink
• Loop Current

Network Protocols

• TCP/IP
• UDP
• RTP/RTCP
• HTTP/HTTPS
• ARP/RARP
• ICMP
• DNS
• DHCP
• NTP
• TFTP
• SSH
• Telnet
• STUN
• SIP
• SIP over TCP/TLS
• SRTP
• SNMP
• TR-069
• IMS/3GPP
• IPoE

QoS

• Layer 2 (802.1Q VLAN, SIP/RTP 802.1p)
• Layer 3 (ToS, DiffServ, MPLS)
• Traffic Shaping

DTMF Method

• In-audio
• RFC2833
• SIP INFO

Provisioning & Control

• HTTP
• HTTPS
• TFTP
• SSH
• TR-069
• AES Encrypted Auto Provisioning
• Syslog

Security

• Media: SRTP
• Control: TLS / SIPS / HTTPS

Management

• Syslog
• Telnet
• SSH
• Remote Web Management

Power

• PoE Input: 48V / 0.5A
• DC Input: 12V / 1A

Environmental

• Operating: 32°–104°F (0°–40°C)
• Storage: 14°–140°F (-10°–60°C)
• Humidity: 10–90% (Non-condensing)

Dimensions

• 190 × 100 × 28 mm (L × W × H)

Weight

• 0.46 kg

Package Contents

• HT881 Gateway
• Ethernet Cable
• Quick Installation Guide
• (Power Supply Not Included)

Compliance

• FCC
• CE
• RCM
• IC
• UKCA