• for G.729/G.728, 64 (x10ms) and 64 (x2.5ms) frames respectively.

 

 

 

 

 

 

 

 

 

 

 

G723 Rate:

 

 

Default is 6.3kbps rate. Defines the encoding rate for G723 vocoder.

 

 

 

 

 

 

 

 

 

 

iLBC frame size:

 

 

Sets the iLBC frame size in 20ms or 30ms

 

 

 

 

 

 

 

 

 

 

iLBC payload type:

 

 

Defines payload time for iLBC. Default value is 97. Valid range: 96 - 127.

 

 

 

 

 

 

 

 

 

 

Silence Suppression

 

 

This controls the silence suppression/VAD feature of G.723. If set to “Yes”, a

 

 

 

 

 

 

small quantity of VAD packets (instead of audio packets) will be sent during

 

 

 

 

 

 

the period of silence. If set to “No”, feature is disabled.

 

 

 

 

 

 

 

 

 

Fax Mode

T.38 (Auto Detect) FoIP (fax over IP) by default, or Pass-Through (must use codec PCMU/PCMA)

 

 

Early Dial

 

 

 

This parameter controls whether the early INVITE each time a key is pressed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If set to “Yes”, an INVITE is sent for each dialed number. If set to NO, INVITE

 

 

 

 

 

 

 

 

is sent after the “(Re-)Dial” button is pressed or after 5 seconds have elapsed.

 

 

 

 

 

 

 

 

The “Yes” option should be used ONLY if there is a SIP proxy configured and

 

 

 

 

 

 

 

 

the proxy server supports 484 Incomplete Address responses, otherwise the

 

 

 

 

 

 

 

 

call is rejected.

 

 

 

 

 

 

 

 

Direct IP-to-IP calling does NOT work with feature. It should not be enabled

 

 

 

 

 

 

 

 

for direct IP-to-IP calling.

 

 

 

 

 

 

 

 

 

 

 

Allow incoming SIP

 

 

 

Default is set to “No”.

 

 

 

 

messages from SIP

 

 

 

 

 

 

 

 

proxy only

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Allow outgoing call

 

 

Default is set to “No”.

 

 

 

 

without Registration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dial Plan Prefix

 

 

Sets the prefix added to each dialed number

 

 

 

 

 

 

 

 

 

 

Use # as Dial Key

 

 

 

If set to “Yes”, the “#” key as the “Send” (or “Dial”) key. If set to “No”, “#” key is

 

 

 

 

 

 

 

part of the dial string.

 

 

 

 

 

 

 

 

 

 

Subscribe for MWI:

 

 

 

Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting

 

 

 

 

 

 

 

 

Indication will be sent periodically.

 

 

 

 

 

 

 

 

 

 

 

Send Anonymous

 

 

 

Blocks Caller ID display if set to “Yes”.

 

 

 

 

 

 

 

 

 

 

 

Lock keypad update

 

 

 

If this parameter is set to “Yes”, the configuration update via keypad is

 

 

 

 

 

 

 

disabled.

 

 

 

 

 

 

 

 

 

 

Refer-To Uses Target

 

 

 

Used for Attended transfer Feature. The “Refer-To” header uses the

 

 

 

 

Contact

 

 

 

transferred target’s “Contact” header information.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Special Feature

 

 

 

Default is Standard. Choose this selection to meet special requirements from

 

 

 

 

 

 

 

Soft Switch vendors.

 

 

 

 

 

 

 

 

 

 

Volume Amplification

 

 

 

Adjusts handset volume. RX is for receiving volume, TX is for transmission

 

 

 

 

 

 

 

volume. Default values are 0dB for both parameters. +6dB generates the

 

 

 

 

 

 

 

highest volume and -6dB generates the lowest volume.

 

Grandstream Networks, Inc.

HT–496 User Manual

Page 25 of 33

 

Firmware 1.0.3.64

Last Updated: 1/2007

VoIPon www.voipon.co.uk

sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 600030

Page 25
Image 25
Grandstream Networks HT-496 G723 Rate, ILBC frame size, ILBC payload type, Silence Suppression, Fax Mode, Early Dial

HT-496 specifications

Grandstream Networks HT-496 is a cutting-edge Analog Telephone Adapter (ATA) designed to bridge the gap between traditional telephone systems and modern Voice over IP (VoIP) networks. As telecommunications technologies continue to evolve, devices like the HT-496 play a crucial role in ensuring seamless communication across diverse platforms.

One of the main features of the HT-496 is its ability to support up to four simultaneous calls. This is particularly advantageous for small to medium-sized businesses that rely on efficient communication to manage customer interactions and internal coordination. The device comes equipped with two FXS ports, enabling users to connect their existing analog telephones directly, ensuring that they can continue using familiar equipment while benefiting from the advanced features of VoIP technology.

The HT-496 supports a variety of voice codecs, including G.711, G.726, G.729, and G.722, allowing for high-quality audio transmission even in bandwidth-constrained environments. This flexibility ensures users can choose the codec that best fits their specific network conditions, optimizing both call clarity and resource efficiency.

In terms of management and security, Grandstream has integrated several advanced technologies into the HT-496. The device includes support for SIP (Session Initiation Protocol), making it compatible with a wide range of VoIP services. Additionally, it features various security mechanisms, such as SRTP (Secure Real-Time Transport Protocol) and TLS (Transport Layer Security), ensuring that voice communications are encrypted and protected from potential threats.

Installation and configuration of the HT-496 are user-friendly, thanks to its web-based interface. This makes it easy for both technical and non-technical users to manage settings, adjust parameters, and monitor system performance. Furthermore, the device supports automatic provisioning, allowing for quick setup with minimal manual intervention.

Another notable characteristic of the HT-496 is its compact design, which enables easy placement in any office environment. Its durable construction ensures reliable operation over time, making it a cost-effective solution for businesses looking to transition to VoIP technology without discarding their existing analog devices.

In summary, the Grandstream Networks HT-496 features a robust design, compatibility with a variety of voice codecs, advanced security protocols, and user-friendly management options. These characteristics make it an essential tool for businesses seeking to enhance their communication systems while maintaining a connection to traditional telephony. By investing in the HT-496, organizations can simplify their transition to VoIP and unlock the full potential of modern telecommunications.