Furthermore, there is one optional USB 2.0 port for different connectivity or applications, such as 3.5G mobile link, WIMAX wireless access, Wi-Fi WLAN access, DECT phone communication, IP Cam, Printer server and etc.
This router can also be easily configured and can be downgraded to an IP-Sharer/NAT or a pure bridged switch for various applications. Users may easily configure and maintain the device through a web-based management or APS for auto-upgrade.
The model GR2122 supports the same features as GR2121, but it has two FXS ports.
| GR2121 Features | |
| General | |
| Availability: | currently available |
| LAN / WAN Connectivity | |
| WAN ports: |
1 |
| WAN port(s) type: | 10/100 Base-TX (RJ-45) |
| WAN port auto cross-over: |
 |
| LAN ports: | 2 |
| LAN ports type: | 10/100 Base-TX (RJ-45) |
| LAN ports auto cross-over: |
|
| USB port(s): |
1 for client devices (optional) |
| USB port type: | USB 2.0 |
| RJ-11 FXS VoIP phone ports: | 1 |
| RJ-11 FXO VoIP PSTN wall jack port: | 1 |
| Router | |
| NAT routing: |
|
| Multihomed: |
|
| DMZ: |
|
| DHCP server: |
|
| DHCP client: |
|
| DHCP relay: |
|
| Dynamic DNS client: |
|
| QoS: |
|
| ToS / DiffServ: |
|
| Routing Protocols: |
RIP v1 (static routing, RFC 1058) RIP v2 (dynamic routing, RFC1389) VLAN tagging (802.1q) IGMP Multicast (RFC 1112) |
| VoIP | |
| VoIP Protocols: |
SIP v2 (RFC 3261) SDP (RFC 2327) T.38 (Fax over IP) STUN (RFC 3489) |
| VoIP Audio Codecs: |
G.711 (PCM) G.723.1 G.726 G.729 (a/b) |
| VoIP Voice Features: |
Echo Cancellation (G.165/G.168) 3-way conferencing Caller ID Call waiting Call transfer Call forward Call Blocking Do Not Disturb (DND) Voice Activity Detection (VAD) Comfort Noise Generator (CNG) |
| VPN | |
| IPSec | |
| IPSec passthrough: |
|
| L2TP | |
| L2TP client: |
|
| L2TP passthrough: |
|
| PPTP | |
| PPTP client: |
|
| PPTP passthrough: |
|
| Firewall | |
| SPI firewall: |
|
| Device Management | |
| Administration: |
Web-based (LAN) Telnet / CLI TFTP (RFC 1350) |
| Firmware upgradeable: |
|
| Misc hardware info | |
| SNMP support: | SNMP v.2 |
| NTP client: |
|
| Print Server: |
|
| Links | |
| Product page: | http://www.tecom.com.tw/en/index.php/pro... |
| Datasheet: | http://www.tecom.com.tw/en/uploads/uploa... |
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