V7111 1X Port Hardware Features; V7111 24 Port Hardware Features; Sip Features - 3Com VCX v7111 User Manual

Supports load balancing with proxy.
T.38 fax fallback to PCM (or NSE).
Can be integrated into a Multiple IPs and a VLAN-aware environment.
Capable of automatically updating its firmware version and configuration.
Secured Web access (HTTPS) and Telnet access using SSL / TLS.
IPSec and IKE protocols are used in conjunction to provide security for control (for
example, SIP) and management (for example, SNMP and Web) protocols.
Secured RTP (SRTP) according to RFC 3711, used to encrypt RTP and RTCP transport.

V7111 1x PORT Hardware Features

Combined FXS/FXO gateways (4 FXS and 4 FXO ports on the V7111 18 PORT; 2 FXS
and 2 FXO ports on the V7111 14 PORT).
V7111 1x PORT compact, rugged enclosure only one-half of a 19-inch rack unit, 1 U
high.
Lifeline - provides a wired phone connection to PSTN line when there is no power, or the
network fails (combined FXS/FXO gateways provide a Lifeline connection available on all
FXS ports).
LEDs on the front panel that provide information on the operating status of the media
gateway and the network interface.
Reset button on the rear panel that restarts the V7111 1x PORT gateway, and is also
used to restore the V7111 1x PORT parameters to their factory default values.

V7111 24 PORT Hardware Features

V7111 24 PORT 19-inch, 1U rugged enclosure provides up to 24 analog FXS ports,
using a single 50 pin Telco connector.
LEDs on the front and rear panels that provide information on the operating status of the
media gateway and the network interface.
Reset button on the front panel that restarts the V7111 24 PORT gateway, and is also
used to restore the V7111 24 PORT parameters to their factory default values.

SIP Features

The V7111 SIP gateway complies with the IETF RFC 3261 standard.
Reliable User Datagram Protocol (UDP) transport, with retransmissions.
Transmission Control Protocol (TCP) Transport layer.
SIPS using TLS.
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3Com VCX V7111 VoIP Gateway User Guide