User's Manual

2. Operation Process

There are two-way of MM-5500PRO operation. One is PPP (Point to Point Protocol) mode

and the other one is PPPoE(PPP over Ethernet) mode.

2.1 PPP mode

On PPP mode MM-5500PRO has the IP from ISP (Internet Service Provider) itself, so MM-

5500PRO can share the IP with many Host PCs. Below figure 3 shows PPP mode operation.

[Figure 3. PPP mode operation]

First, Host PCs get each private IP(hereby IP-1) from MM-5500PRO via DHCP server.

Second MM-5500PRO gets public/Private IP(hereby IP-2) from ISP via CDMA 1x EVDO

modem. Now MM-5500PRO has two kinds of IP, one is from ISP and the other ones are to

Host PCs. Third, MM-5500PRO convert network data between IP-1 and IP-2 via NAT.

2.2 PPPoE mode

On PPPoE mode MM-5500PRO has no IP, just the Host PC gets IP from ISP.

[Figure 4. PPPoE mode operation]

Different on PPP mode, the IP from ISP goes to Host PC directly. MM-5500PRO

converts protocol from PPP to PPPoE or on reverse direction, the Host PC processes all

network protocols.