TVP-221H User’s Guide

Address table sample:

Address

Hunt

Min.

Entry

Grp_Id

Digits

 

 

 

201

3

3

301

4

3

8

1

3

0

1

1

20

11

5

Max. Digits

 

Prefix

Prefix

 

 

strip

Address

3

 

 

 

 

3

None

3

 

3

None

3

 

0

None

1

 

0

None

5

 

2

None

3.52Hunt Group Table

The hunt group table maps a hunt group to a list of destinations. Hunt group sample

Hunt Group ID

Hunt Type

# of Dest ID(s)

1

2

1

 

 

 

3

2

1

 

 

 

4

2

1

 

 

 

11

2

1

 

 

 

Dest. ID(s)

1

3

4

11

3.53Destination Table

The destination table maps a destination to a telephony port or the IP address of a remote TVP-221H.

Destination table sample

Dest ID

Mode

Destination

1

Local

Port = 0

 

 

 

3

Local

Port = 2

 

 

 

4

Local

Port = 3

 

 

 

11

H.323

Dest = 192.168.0.55/1720 TCP

 

 

 

3.6DTMF Relay

Voice from PSTN is compressed by the TVP-221H before it is sent across the IP network and then decompressed by the destination VoIP gateway. The voice codecs supported by the TVP-221H are designed for ideally compressing and decompressing human voice. If the compression / decompression process is performed on DTMF tone which needs to be conveyed across IP network, distortion might be too significant to be cognizable on the receiving end. To overcome the shortcoming that the voice codecs may have encoding DTMF tone, the TVP-221H encodes DTMF tone into special packets. The packets are then sent to the destination VoIP Gateway via a separate IP connection. The destination VoIP Gateway decodes the packets, generates the DTMF tone, and then sends the

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TRENDnet TVP- 221H, VoIP Gateway manual Dtmf Relay, Hunt Group Table, Destination Table, Address Hunt Min Entry GrpId Digits

VoIP Gateway, TVP- 221H specifications

The TRENDnet TVP-221H is a robust VoIP Gateway designed for seamless communication in both residential and small business environments. This device is engineered to facilitate the transmission of voice calls over the internet, leveraging Voice over Internet Protocol (VoIP) technology to enhance communication efficiency and reduce costs associated with traditional telephony.

One of the standout features of the TVP-221H is its dual FXS ports, which allow users to connect standard analog phones or fax machines directly to the gateway. This ensures compatibility with existing equipment, providing a smooth transition from conventional phone services to VoIP solutions. The device supports a wide range of codecs including G.711, G.723, G.726, and G.729, ensuring high-quality, clear voice transmission suitable for various bandwidth requirements.

The TRENDnet TVP-221H also boasts an intuitive web-based interface, making it easy for users to configure and manage their VoIP settings. This feature provides accessibility for remote management, enabling quick adjustments to settings and ensuring that the system is always optimized for performance. In addition, the gateway supports advanced call features such as call waiting, caller ID, and call forwarding, enhancing overall user experience and functionality.

In terms of security, the device incorporates support for SIP TLS and SRTP, providing encryption for signaling and media streams respectively. This ensures that voice communications are kept secure from potential eavesdropping or tampering, critical in today's digital landscape where privacy is a priority.

The TRENDnet TVP-221H is also designed with quality of service (QoS) features to prioritize voice traffic, ensuring smooth call performance even in environments with heavy internet usage. It also supports automatic provisioning and firmware upgrades, simplifying updates and maintenance workflows.

With its compact design, the device can be easily mounted on a wall or placed on a desk, offering flexibility in installation. Its low power consumption and efficient operation also make it an eco-friendly choice for businesses looking to minimize their energy footprint while enhancing communication capabilities.

In summary, the TRENDnet TVP-221H VoIP Gateway is an essential tool for modern communication, providing reliable performance, advanced features, and a user-friendly experience. Its combination of security, call management capabilities, and ease of use makes it a top choice for anyone looking to improve their telephony solutions.