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Availability - In stock
Grandstream BT488
The HandyTone 488 is an All-In-1 Analogue VoIP Adaptor based
on SIP standard. It features superb sound quality, rich
functions, a high degree of integration, ease of use, compact
size and all at a great price.
The new Handytone-488 features 1 FXO gateway and 1 FXS port
Product Features
1 FXS Port (for Analogue Phones) and 1 FXO gateway (for
analogue line)
SIP 2.0, TCP/UDP/IP, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS,
DHCP, NTP, TFTP protocols
PSTN port for connection to your analogue line - automatic
switchover to landline in the event of an Internet failure
Built-in router, NAT and gateway - ideal for cable modem
users
NAT traversal using IETF STUN and symmetric RTP
(compatible with Cisco's ATA-186)
Advanced Digital Signal Processing (DSP) to ensure superb
hi-fidelity audio quality
One LAN port, one WAN port for any analog telephones,
cordless phones and fax machines
Interoperable with various 3rd party SIP and user devices,
Proxy/Registrar/Server, and gateway products
Advanced and patent pending adaptive jitter buffer
control, packet delay and loss concealment technology
Popular codecs including G.723.1 (5.3k/6.3k), G.729A/B,
G.711 (a-law and u-law), G.726 and G.728. Dynamic
negotiation of codec and voice payload length
Standard voice features such as Caller ID Display or
Block, FLASH, in-band and out-of-band DTMF (RFC2833), Dial
Plans, off-hook auto dial, entry dial, click-to-dial
Acoustic echo cancellation, voice mail with indicator,
downloadable ring tone (pending)
Silence Suppression, VAD (Voice Activity Detection), CNG
(Comfort Noise Generation), Line Echo Cancellation (G.168)
and AGC (Automatic Gain Control)
DIGEST authentication and encryption using MD5 and
MD5-sess
Provide easy configuration thru manual operation
(attached analog phone keypad and voice prompt, Web
interface) or personalised automated provisioning via
central configuration file for mass deployment
Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS,
DiffServ, MPLS)
NAT-friendly remote software upgrade capability (via
tftp) even from behind firewalls/NATs
£64.99
£76.36incVAT
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