 EP-838M is a business IP telephone developed by Debole Company himself. It is a luxe IP telephone compatible with H.323 V4 and SIP V2, achieving full duplex hands-free call and having 128*64 graphics LCD with back light, which can display many languages. When it is disposed into H.323, EP-838M cancooperate with GK and GW of most H.323. It also has perfect H.450 protocol to complete all telecom value-added services such as call transfer, call forward, call waiting, etc.. Cooperating with soft exchange system, it can totally replace traditional PBX or KEY LINE PHONE. It can also be used as LAN phone or hot-line phone. When it is disposed into SIP, EP-838M can cooperate with most SIP system. Besides having popular g.723 and g.729, it can use low-priced GSM voice compression algorithms. This model is the first-selected one for telecom operators and the main type exported by Debole Company.
Concrete technical parameters of EP-838M are as follows:
| Hardware characteristics |
Parameter |
Remarks |
| Mode |
EP-838M |
Can be customized |
| Processor |
ARM9 133MHz |
|
| RAM |
16M |
|
| FLASH |
4M |
|
| Power |
12VDC / 500mA |
|
| Consumption |
Maximum 3W |
|
| LCD |
128×64 TSTN |
White background light turn on automatically |
| Network card |
100/10BASE-T ×2 |
|
| Weight |
650 grams |
|
| Working temperature |
0－45℃ |
|
| Working humidity |
40%－90%
not congealed |
|
| Authentication |
FCC CE |
|
| Power supply |
Switch power or linear power supply |
Available |
| Color |
Black |
|
| Voice characteristics |
Operating situation |
Remarks |
| Duplex hands-free |
Available |
32mS |
| g.723 |
Available |
|
| g.711A/u |
Available |
|
| g.729A/B |
Available |
|
| GSM |
Available |
|
| PLC |
Available |
|
| CNG |
Available |
|
| VAD |
Available |
|
| Jitter buffer algorithm |
Available |
|
|
Network characteristic |
Parameter |
Remarks |
| LAN port |
| DHCP |
Support |
|
| PPPoE |
Support |
|
| Static IP |
Support |
|
| Firewall traversal |
Relay or the port transmitting |
Relay should be used with the Debole Relay server |
| Network time |
NTP / SNTP |
|
| 10/100BASE-T |
10、100auto configure |
|
| Search for the network status automatically |
Support |
Check the network status after initiation or reset, include DHCP, PPPoE or static IP |
| PC port |
| Static IP |
Support |
|
| DHCP
service |
support maximum of 200 terminal stations |
|
| 10/100BASE-T |
10、100auto configure |
|
| Switch mode |
Support |
|
| Protocol |
Parameter |
Remarks |
| H.323 |
| H.323 V4 |
ITU-T |
|
| H.450 |
Support the first 6 |
|
| H.225 |
Support |
|
| H.245 |
Support |
|
| H.235 |
Support |
|
| RCF-1889 |
RTP/RTCP |
|
| IP to IP |
Support |
|
| SIP |
| RFC 3261 |
|
Session Initiation Protocol |
| RFC 2327 |
|
SDP: Session Description Protocol |
| RFC 3264 |
|
An Offer/Answer Model with the Session Description Protocol (SDP) |
| RFC 3265 |
|
Session Initiation Protocol (SIP)-Specific Event Notification |
| RFC 3515 |
|
The Session Initiation Protocol (SIP) Refer Method |
| RFC 2976 |
|
The SIP INFO Method |
| RFC 2833 |
|
|
| RFC 3489 |
|
|
| RFC 3842 |
|
A Message Summary and Message Waiting Indication Event Package for the Session Initiation Protocol (SIP) |
| RFC 3891 |
|
The Session Initiation Protocol (SIP) "Replaces" Header |
| RFC 3892 |
|
The Session Initiation Protocol (SIP) Referred-By Mechanism |
| draft-ietf-sipping-cc-transfer-04 |
|
Session Initiation Protocol Call Control - Transfer |
| User interface |
Parameters |
Remarks |
| Configuration parameter |
HTTP |
|
| Multiple password |
Triple password |
|
| Keypad configuration |
Support |
|
| Online upgrade |
http |
|
| Call history |
30 |
|
| Phone book |
Compatible with 100 items of outlook |
|
| Call waiting |
Support |
The called party should support H.450 |
| Call transfer |
Support |
| Call forward |
Support |
| Call hold |
Support |
| Handset volume |
6
grades regulating |
|
| Speaker volume |
6
grades regulating |
|
| LCD contrast ratio |
4
grades regulating |
|
| Language of Configuration page |
Chinese, English |
Can be customized |
| Varied district'brief on sound |
China , U.S.A. , Hong Kong , Japan ,etc. |
|
|
