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Old 11-06-2002, 07:38 PM   #1
whepin
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Registered: Dec 2001
Location: thunder bay, on, Canada
Distribution: Windows vista & Ubuntu
Posts: 113

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sync and async serial of Routers


Really i am a newbie about networking.I have seen some details about sync and async serial,but i am still not clear what is the diffrence between sync and async serial? And who can tell me the diffrent use of them? Do they just link WAN?

The following is what i extracted from cisco.com.

1: Synchronous serial interfaces on serial WAN interface cards

Interface speed: up to 2.0 Mbps (T1/E1); synchronous serial protocols: PPP, HDLC, LAPB, IBM/SNA; synchronous serial WAN services: Frame Relay, X.25, SMDS; synchronous serial interfaces supported on the WIC-1T, WIC-2T, and WIC-2A/S cards: V.35, EIA/TIA-232, EIA/TIA-449, X.21, EIA-530

2:Asynchronous serial interfaces on serial WAN interface cards

Interface speed: up to 115.2 kbps; Asynchronous serial protocols: Point-to-Point Protocol (PPP), Serial Line Internet Protocol (SLIP); asynchronous interface: EIA/TIA-232
 
  


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