Cisco Cisco 1800 2800 3800 8-Port Async Sync EIA-232 Serial High-Speed WIC Information Guide
Q&A
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Serial and Asynchronous Modules for Cisco
Integrated Services Routers
Integrated Services Routers
Cisco
®
serial and asynchronous modules provide highly flexible connections for Cisco
1800, 1900, 2800, 2900, 3800, and 3900 Series Integrated Services Routers (ISRs).
These modules help customers enable applications such as WAN aggregation,
transport of traditional protocols, console servers, and dial access servers. Customers
can mix and match modules to tailor cost-effective solutions for common networking
problems such as remote network management, external dial modem access, low-
density WAN aggregation, transport of traditional protocols, and high-port-density
support.
These modules help customers enable applications such as WAN aggregation,
transport of traditional protocols, console servers, and dial access servers. Customers
can mix and match modules to tailor cost-effective solutions for common networking
problems such as remote network management, external dial modem access, low-
density WAN aggregation, transport of traditional protocols, and high-port-density
support.
Q. Can you describe these new modules?
A. Cisco offers these serial and asynchronous modules:
●
Cisco 2800, 2900, 3800, and 3900 Series 4-Port Serial High-Speed WAN Interface Card (HWIC-4T): Four
high-speed serial ports
Cisco 1800, 1900, 2800, 2900, 3800, and 3900 Series 4-Port Asynchronous/Synchronous High-Speed WAN
Interface Card (HWIC-4A/S): Four low-speed asynchronous/synchronous ports:
●
Cisco 1800, 1900, 2800, 2900, 3800, and 3900 Series 8-Port Asynchronous/Synchronous High-Speed
WAN Interface Card (HWIC-8A/S-232): Eight low-speed asynchronous/synchronous ports, EIA-232 only
●
Cisco 1800, 1900, 2800, 2900, 3800, and 3900 Series 8-Port Asynchronous High-Speed WAN Interface
Card (HWIC-8A): Eight asynchronous EIA-232 ports
●
Cisco 2800, 2900, 3800, and 3900 Series 16-Port Asynchronous High-Speed WAN Interface Card (HWIC-
16A): Sixteen asynchronous EIA-232 ports
●
Cisco 3900 Series 32-Port Asynchronous Service Module (SM-32A): Thirty-two asynchronous EIA-232
ports
Synchronous serial ports are typically used in the following networking solutions:
●
WAN links using Cisco High-Level Data Link Control (HDLC), Point-to-Point Protocol (PPP), or Frame
Relay encapsulation: With up to eight synchronous serial ports, these HWICs are well suited for low-
density WAN aggregation.