 HT-922 is the latest one port VoIP ATA with PSTN backup from DBL Technology. HT-922 supports the wildly used industrial standards, both SIP and H.323, in a single firmware. Switch to different a protocol only needs simple configuration and no firmware upgrade is needed. HT-922 provides one standard 24V FXS port, which can connect to standard handset, cordless phone or PBX. The PSTN backup port can make and receive call using existing telephone line. It also supports caller Id display on incoming calls. The device is easy to configure, compact and well designed, offers toll quality voice and low cost. It's ideal for VoIP service provider and system integration.
Concrete technical parameters of HT-812P are as follows:
Hardware Features |
Parameters |
Remark |
Model |
HT-922 |
Model name can be customized |
CPU |
ARM9 133MHz |
|
DSP |
VP-101 |
|
RAM |
16M |
|
FLASH |
4M |
|
Power |
24VDC / 500mA |
|
Consumption |
The maximum 4W |
|
LED |
Run, network, hook |
|
Ethernet |
100/10BASE-T ×2 |
|
Weight |
95 grams |
|
Working temperature |
0－45℃ |
|
Working humidity |
40％－90％not congealed |
|
Color |
Gray |
|
RJ11 Port |
x2 |
24V Open-circuit Voltage , 48V Ring Voltage |
Voice Features |
Availabilities |
Remark |
G.168 |
Yes |
16ms |
G.723 |
Yes |
|
G.711A/u |
Yes |
|
G.729AB |
Yes |
|
GSM |
No |
|
PLC |
Yes |
|
CNG |
Yes |
|
VAD |
Yes |
|
Jitter Buffer |
Yes |
30ms – 250ms adaptive |
Network Features |
Availabilities |
Remark |
LAN port |
DHCP |
Yes |
|
PPPoE |
Yes |
|
Static IP |
Yes |
|
NAT traversal |
STUN, Port-forwarding or Proprietary Relay Protocol |
Proprietary Relay Protocol needs DBL Relay Server |
Time server |
NTP / SNTP |
|
Ethernet |
10/100 auto |
|
PC port |
Static IP |
Yes |
|
DHCP Server |
Maximum 200 clients |
|
Ethernet |
10/100 auto |
|
Built-in Switch |
Yes |
|
Protocol |
Availabilities |
Remark |
H.323 |
H.323 V4 |
Yes |
|
H.450 |
Disabled |
|
H.225 |
Yes |
|
H.245 |
Yes |
|
H.235 |
Yes |
|
RCF-1889 |
RTP/RTCP |
|
IP to IP call |
Yes |
|
SIP |
RFC 3261 |
Yes |
Session Initiation Protocol |
RFC 2327 |
Yes |
SDP: Session Description Protocol |
RFC 3264 |
Yes |
An Offer/Answer Model with the Session Description Protocol (SDP) |
RFC 3265 |
Yes |
Session Initiation Protocol (SIP)-Specific Event Notification |
RFC 3515 |
Yes |
The Session Initiation Protocol (SIP) Refer Method |
RFC 2976 |
Yes |
The SIP INFO Method |
RFC 2833 |
Yes |
|
RFC 3489 |
Yes |
|
RFC 3842 |
Yes |
A Message Summary and Message Waiting Indication Event Package for the Session Initiation Protocol (SIP) |
RFC 3891 |
Yes |
The Session Initiation Protocol (SIP) "Replaces" Header |
RFC 3892 |
Yes |
The Session Initiation Protocol (SIP) Referred-By Mechanism |
draft-ietf-sipping-cc-transfer-04 |
Yes |
Session Initiation Protocol Call Control - Transfer |
User Interface |
Availabilities |
Remark |
Web based configuration |
HTTP |
|
User Levels |
Three Levels |
|
Online upgrade |
HTTP, HTTPS, FTP, TFTP |
|
Volume gain control |
10 adjustable levels |
|
IP address voice prompt |
Yes |
Chinese、English |
Billing support |
Yes |
Need billing software from? DBL technology |
Language |
Chinese、English |
Additional language support can be added upon request. |
Network tones |
China, US, UK, Japan, Korean, Australia, New Zealand, Hong Kong, Taiwan |
|
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