PBX's and Gateways

The Grandstream GXW4248 is a 48 FXS port VoIP gateway that can be used to connect analog devices such as phones and faxes to a VoIP network. Support for several voice/fax codes and a combination of 48 RJ11 FXS ports and a 50-pin Telco connector makes the GXW4248 versatile for a variety of uses.

Grandstream GXW4248 FXS VoIP Gateway Overview

The PBX VOIP Phone system is a next generation high performance high-density VoIP gateway that is fully compliant with SIP standards and broadly interoperable with various VoIP systems, analog PBX and phones on the market. The IP Phone system, superb voice quality, rich telephony functionalities, easy provisioning , flexible dialing plans, advanced security protection, and excellent performance in handling high volume voice calls.

This Office Phone system gateway offers small-to-medium businesses a cost-effective hybrid IP and analog telephone system that allows them to enjoy the benefits of VoIP communications while preserving investment on existing analog phones, fax machines and legacy PBX systems.

Features and Functions:

Gigabit Ethernet and a backlit 128x32 graphic LCD display with support for multiple languages
2 SIP server profiles per system and independent SIP account per port
Supported voice/fax codecs include G.711, G.723.1, G.726, G.729A/B, iLBC, T.38 Fax
Advanced carrier grade 128ms-tail-length line echo cancellation
Over-voltage and over-current protection (ITU-T K.21 Basic Test Level)
Support VMWI, NEON LED and stutter tone for message waiting indication
Automated provisioning using TR-069 or AES encrypted XML configuration file; TLS/SRTP/HTTPS for advanced security and privacy protection

VoIP Analog Telephony Cards

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