Cisco 1605-R How To Use Manual page 51

Figure 3-2
2-Port Asynchronous/Synchronous Serial Card
The 2-port asynchronous/synchronous (A/S) WAN interface card, shown in Figure 3-3,
provides an EIA/TIA-232, EIA/TIA-449, V.35, X.21, DTE/DCE, EIA-530, or EIA-530A
serial interface to a Cisco modular router. The 2-port A/S WAN interface card supports
asynchronous data rates up to 133.6 kbps and synchronous data rates up to 128 kbps.
Figure 3-3
2-Port Serial WAN Interface Card—Front Panel
Serial ports
CONN LEDs
2-Port A/S Serial WAN Interface Card—Front Panel
Serial ports
CONN LEDs
Connecting WAN and Voice Interface Cards to a Network 3-3
2-Port Asynchronous/Synchronous Serial Card