Grandstream-networks HANDYTONE 486 Uživatelský manuál stáhnout pdf (Strana 6)

HandyTone-486 User Manual Grandstream Networks, Inc.

4 Product Overview

4.1 Key Features

• Supports SIP 2.0(RFC 3261), TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS,

DHCP (both client and server), NTP, PPPoE, STUN, TFTP, etc.

• Built-in router, NAT, Gateway and DMZ port forwarding. Can also be configured to function

as a bridge (with disabled NAT and DHCP)

• Powerful digital signal processing (DSP) to ensure superb audio quality; advanced adaptive

jitter control and packet loss concealment technology

• Support various codecs including G.711 (PCM a-law and u-law), G.723.1 (5.3K/6.3K), G.726

(40K/32K/24K/16K), as well as G.728, G.729 and iLBC.

• Support Caller ID/name display or block, Call waiting caller ID, Hold, Call Waiting/Flash, Call

Transfer, Call Forward, in-band and out-of-band DTMF, Dial Plans, etc.

• Support fax pass through (for PCMU and PCMA) and T.38 FoIP (Fax over IP).

• Support Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise

Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)

• Support standard encryption and authentication (DIGEST using MD5 and MD5-sess)

• Support for Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)

• Support automated NAT traversal without manual manipulation of firewall/NAT

• Support device configuration via built-in IVR, Web browser or Central configuration files

through TFTP or HTTP server

• Support firmware upgrade via TFTP or HTTP with encrypted configuration files.

• Support PSTN pass through, be able to make and receive VoIP or PSTN calls using same

connected analogue phone.

• Ultra compact (wallet size) and lightweight design, great companion for travelers.

• Compact, lightweight Universal Power adapter.

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Grandstream-networks HANDYTONE 486 Uživatelský manuál Strana 6