General
Manufacturer	Grandstream
Model	Grandstream HT503
Manufacturer Part No	HT503

Grandstream HT503

22 reviews / Write a review

Brand Store: Grandstream
Model: Grandstream HT503
Availability: Out Of Stock
Part No: HT503
Chat with Terrabyt.com Bulk Requirement

About this item

Network integration between PSTN and POTS has never been so easy. The HT503 is a hybrid analog telephone adapter and VoIP router that enables the user to create an easily integrated hybrid solution with backup lifeline support.

Grandstream Grandstream HT503

Description

The HT503 enables an integrated hybrid deployment between PSTN and VoIP environments. Users can utilize “hop-on and hop-off” calling through its FXO and FXS port that enables remote call origination and termination to and from the PSTN line. This ATA features 1 analog telephone FXS port and 1 PSTN line FXO port. Users can utilize the device for extension of a VoIP service to 1 analog phone with the FXS port. In
addition to being SIP compliant, this product features support for up to 2 SIP account profiles, excellent voice quality and advanced telephony features.

Features

1 FXS analog telephone ports (RJ11), 1 PSTN line FXO port, dual 10/100 Mbps ports with integrated NAT router

Advanced telephony features include caller ID, call waiting

3-way voice conference, transfer, forward, do not disturb, message indicator, multi-language voice prompts, T.38 fax, flexible dial plan and more

Supports up to 2 SIP accounts

Status LED for power, telephone and network ports, and message waiting indication

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General
Manufacturer	Grandstream
Model	Grandstream HT503
Manufacturer Part No	HT503

Koma	21/05/2025
High-quality product, well packed and delivered on time. Trusted seller.

Dennis Lacambra	21/05/2025
100% satisfied. Original product, top quality. The packing was also excellent.

Zahra	21/05/2025
Received a genuine item with superb packaging. Appreciate the effort by Terrabyt Computer.

Antonio Grauso	21/05/2025
Product quality is great and it’s definitely genuine. Thanks to the reliable seller.

FraggleRock	21/05/2025
Terrabyt Computer never disappoints. Genuine product and excellent packing.