Comments on: LAN Cables

By: anna mae

anna mae — Tue, 27 Sep 2011 07:25:49 +0000

yeah its great….first its hard but you can get easily if you are listening to your assessor…

By: Jerry Sunga

Jerry Sunga — Sun, 05 Jun 2011 18:51:41 +0000

Appreciate if you can explain the difference between the FXS and FXO by giving actual example inside the telephone system in an office.

1. FXS : Cisco VIC3-4FXS/DID – 4 Port FXS/DID Voice Interface Card features a-port FXS used to connect directly to analog phones, fax machines, and key systems, generates battery polarity reversal and Caller ID and also provides off-premises DID connection from central office to serve incoming calls from the PTSN

2. Cisco FXO Voice Interface Card 4 analog ports – is used to connect to PBX or key system, or to provide off-premises connections to PSTN or PTT. The Cisco Foreign Exchange Office (FXO) interface is an RJ-11 connector that allows an analog connection to be directed at the public switched telephone network’s (PSTN’s) central office or to a station interface on a private branch exchange (PBX)S.

Can you give an example on each item as what is happening in the real world or in the office when you install these cards. Thanks…Jerry

By: Ki Grinsing

Ki Grinsing — Sun, 29 May 2011 04:27:31 +0000

1. FE0/1 connects to the switch – this makes sense, typically the FE would go to the switches in the private / internal network or typically go to the firewall devices if further security protection is required.

2. this looks odd for me, I don’t know how do you design the network. Wireless DSL modem is typically connected to the phone lines for the internet connection and the four ethernet ports should go to direct to the computers or extended switch. What types of wireless DSL modem is it?

By: Jerry Sunga

Jerry Sunga — Sat, 28 May 2011 15:58:50 +0000

Thanks for the reply.

1. In one of our branches, FE 0/1 port( 2811 cisco router )is connected via cable to one of the switches port of a catalyst 2960. What does this mean ?

2. In another branches, FE 0/0 port is connected via cable to one of ethernet 4- ports of a wireless DSL modem. What does this mean?

Thanks and regards,

Jerry

By: Ki Grinsing

Ki Grinsing — Sat, 28 May 2011 08:02:16 +0000

Jerry:
1. the two FE0/0 and fe0/1 are the fast ethernet (FE) ports Fe0 is the first fast ethernet module, feo/0 the first FE module #1 and the fe0/1 is the first FE module #2

2. PVDM is Packet Voice DSP Module in the motherboard slot. if the module is available, the LED should be “ON”. AIM is advanced integration modules its hardware-based encryption module for robust security.

3. afsl has been described in the device A = ACT for activity
F=FDX is full duplex line and so on

By: Jerry Sunga

Jerry Sunga — Sat, 28 May 2011 06:32:23 +0000

In Cisco 2811 Router, pls. explain the following:

1. The two ethernet ports FE 0/1 , FE 0/0

2. Under these 2 ports, the LEDs PVDM1, PVDM0, AIM1 & AIM0.

3. On the left and right side of these ports, the AFSL LEDs indicators.

What do they signify?

Thanks and regards,

Jerry

By: Jerry Sunga

Jerry Sunga — Mon, 23 May 2011 00:22:00 +0000

Hi Ki,

Of all the websites I visited regarding computer networking, you are the best , Ki. I wish that you will stay on the line helping interested people on networking.

Jerry

By: admin

admin — Sun, 22 May 2011 03:56:48 +0000

thanks for the visit Jerry … any questions are wellcome and we wish we can help you …
Cheers…

By: Jerry Sunga

Jerry Sunga — Sun, 22 May 2011 00:34:20 +0000

your great , Sir. Im having my interest on computer networking as I see all these LAN cables, switches, servers in our building. I am a maintenance technician and I do really want to understand the concept of networking as I see them in our corporate building and branches. By the way , I work for a Credit Union Bank with around 40 branches around the Bay Area. I wish, I could ask you some practical questions as I see the cables and cisco catalyst switches, routers, patch panel. etc. Thanks for your help.