Provides Residential or SOHO Network (LAN) Gateway Function     - Ethernet interface for local networking     - IP sharing and automatic assignment by NAT/DHCP   - 4 port HUB built-in for LAN configuration (eRGW ® -EL4M)   Provides VoIP Adapter Functions Using Analog Phones     - No need PC or program     - Configurable interface with FXS or FXO up to 4 ports   - Internet telephony using POTS Phone (FXS)   - Internet telephony with POTS line interface (FXO)   - Working together Key-telephone system or PBX   - Compatible with H.323/SIP based terminals   - Saving call charge dramatically     Provides VoIP Adapter functions using analog phones and line interface     - No need PC or program     - Configurable interface with FXS or FXO up to 4 ports     Easy Management by Web based Manager     - Fast and easy setup     - Can upgrade firmware at remote     Embedded Linux Kernel (Version 2.4.17)