Hi all,I am planning to  take the CCNP Voice certification by this year. But I am not sure that  do I need to take the CCNA voice cert before take CCNP voice.I am a CCNA certified 3 years ago and my cert is going to expire on this year May, 2011.Can ...

Hi,I have came across some note about the IPv6."How about /47s in 2001:1::/32?Hex 2001 = Binary 0010 0000 0000 0001 = /16Hex 0001 = Binary 0000 0000 0000 0001 = /32Hex 0000 = Binary 0000 0000 0000 00X0 = /47So bit “X” keep changing:Binary 0000 0000 0...

Hi all,Can anyone briefly explain to me what is ISDN phone and give example of it? Any help is highly appreciated

Hi all,I have some doubts regarding the E1 line used in the PRI interface for the voice network. As we all know, the number of usable voice channels in the E1 PRI is 30 channels. I would like to know that is there any possibility that we make some re...

Hi all,I am new to the CCNA voice world. First of all, I come across to the ISDN switch type in some website, but I still cannot get the clear picture of this concept. May I know where I can get the ISDN switchtype that to be used in our voice networ...