Grandstream E1 Gateway 2 Port GXW4502

The Grandstream E1 Gateway 2 Port GXW4502 that allow digital PSTN and ISDN trunks to be integrated with VoIP networks. By connecting the GXW4500 series with a VoIP network and a traditional PBX or E1/T1/J1 provider, businesses can drastically increase the amount of PSTN/ISDN trunks integrated with their VoIP network.

The GXW4502 series supports PRI, SS7 and MFC R2 digital signaling protocols and nearly all major voice codecs including Opus, G.722, G.711, G.729, G.723, iLBC, G.726, GSM-FR, etc. This E1/T1 digital VoIP gateway includes dual Gigabit network ports with a configurable integrated NAT router, two USB 3.0 ports, and one SD card interface. By adding echo cancellation, jitter buffer, T.38 fax support, TLS and SRTP security encryption as well as automated provisioning by HTTP/TFTP with XML config files, the GXW4502 is able to cater to the VoIP needs of large and medium enterprises.

DHCP Client Yes, Switched Mode or PPPoE

Fax over IP: T.38 compliant Group 3 Fax Relay up to 14.4kpbs & auto-switch to G.711 for Fax Pass-through

QoS: Diffserve, TOS, 802.1P/Q VLAN tagging

IP Transport: RTP/RTCP

DTMF Method: flexible DTMF transmission method, user interface of in-audio, RFC2833, and/or SIP info

IP Signaling SIP (RFC 3261)

SIP Server Profiles & Accounts Per System Up to 2 distinct SIP server profiles per system and independent SIP account per port

Provisioning TFTP and HTTP

Media SRTP