Nx Networks 3000 - Manual (Page 35)

3000 Series User Guide 21
Connecting to a PPP WAN
To connect the WAN module to a PPP WAN,
1. Connect the module to an external modem.
Note: The 3000 Series support both asynchronous and synchronous
modems.
2. Connect the modem to the telephone line with an RJ-11 cable.
Connecting to a Frame Relay WAN
To connect the WAN module to a Frame Relay WAN,
1. Connect the module to an external Channel Service Unit/Digital Service
Unit (CSU/DSU).
You can purchase the appropriate cable from N
x
Networks. See Selecting
a WAN Cable on page 18.
Note: The 3000 Series works with any of the major CSU/DSU products
on the market.
3000 Series
Modem
PSTN
(PSTN = Public Switched Telephone Network)
3000 Series
VOIC E OICE
V1 V1
D1 D1 D2 D2 D3 D3 ETH ETH
V2 V2 V3 V3 V4 V4
DATA
ALM ALM OK OK PWR PWR
Internet or
Other WAN
Modem
Internet
Service
Provider