User's Manual
Table Of Contents
- DOCUMENT PURPOSE
- CHANGE LOG
- GUI INTERFACE EXAMPLES
- WELCOME
- PRODUCT OVERVIEW
- GETTING STARTED
- CONFIGURATION GUIDE
- Obtain HT801 IP Address via Connected Analogue Phone
- Understanding HT801 Interactive Voice Prompt Response Menu
- Configuration via Web Browser
- Web Configuration Pages Definitions
- NAT Settings
- DTMF Methods
- Preferred Vocoder (Codec)
- Configuring HT801 Through Voice Prompts
- Register a SIP Account
- Call Features
- Rebooting HT801 from Remote
- UPGRADING AND PROVISIONING
- RESTORE FACTORY DEFAULT SETTINGS
- EXPERIENCING HT801

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HT801 Administration Guide
Fax Mode
Specifies the fax mode : T.38 (Auto Detect) FoIP by default, or Pass-Through (must use
codec PCMU/PCMA)
Re-Invite after Fax
Tone Detection
Mode
Permits the unit to send out the re-INVITE for T.38 or Fax Pass Through if a fax tone is
detected. Default is Enabled
Jitter Buffer Type
Selects jitter buffer type (Fixed or Adaptive) based on network conditions.
Jitter Buffer Length
High (initial 200ms, min 40ms, max 600ms) Note: not all vocoders can meet
the high requirement.
Medium (initial 100ms, min 20ms, max 200ms).
Low (initial 50ms, min 10ms, max 100ms).
SRTP Mode
Selects SRTP mode to use (“Disabled”, “Enabled but not forced”, or “Enabled and
forced”). Default is Disabled.
It uses SDP Security Description to exchange key. Please refer to
SDES: https://tools.ietf.org/html/rfc4568
SRTP: https://www.ietf.org/rfc/rfc3711.txt
Crypto Life Time
Adds crypto life time header to SRTP packets. Default is Yes.
SLIC Setting
Depends on standard phone type (and location).
Caller ID Scheme
Selects the caller id scheme, for example : Bellcore/Telcordia, ETSI-FSK …
DTMF Caller ID
Defines the start and stop tones.
Polarity Reversal
Reverses the polarity upon call establishment and termination. Default is No.
Loop Current
Disconnect
Allows the traditional PBX used with HT801 to apply this method for signaling call
termination. Method initiates short voltage drop on the line when remote (VoIP) side
disconnects an active call. Default is No.
Loop Current
Disconnect
Duration
Configures the duration of voltage drop described in topic above. HT801 supports a
duration range from 100 to 10000 ms. Default value is 200.
Enable Hook Flash
Enables the FLASH button to be used for terminating calls. Default is Yes.
Hook Flash Timing
Defines the time period when the cradle is pressed (Hook Flash) to simulate FLASH.
To prevent unwanted activation of the Flash/Hold and automatic phone ring-back, adjust
this time value. HT801 supports a range from 40 to 2000 ms. Default values are 300
minimum and 1100 maximum.










