With PRI it is built in, controller t1 x. Dave
"Ladrach, Daniel E." wrote: > > You would have to get a different CSU for your router. > > Daniel Ladrach > CCNA, CCNP > WorldCom > > -----Original Message----- > From: Brian Zeitz [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, March 12, 2002 3:29 PM > To: [EMAIL PROTECTED] > Subject: RE: T1 Vs ISDN PR [7:37983] > > OK this answered my question. If my only choice is a T1 PRI, then I > don't have to worry about things not working. Like my router and > firewall, I was just thinking it was something out of the ordinary. I > need just a regular T1 for internet access, and wasn't sure what PRI > was. And if a CAS only does voice, that would not work for what I am > doing. I was thinking that if it was a T1 PRI I would need some special > cards on the router or something. > > -----Original Message----- > From: Chris Charlebois [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, March 12, 2002 2:43 PM > To: [EMAIL PROTECTED] > Subject: RE: T1 Vs ISDN PR [7:37983] > > T-1 is the layer 1 standard. ISDN PRI uses T-1 for layer 1 > connectivity. > Therefore, whenever you say ISDN PRI, you are referring to T-1. > However, > not all T-1's are ISDN PRI. > > The "other" T-1 is referred to as CAS, channel associated signaling and, > as > far as I know, is only used for voice. It allows 24 channels of sampled > voice. ISDN PRI (aka common channel signaling) is a digital standard > and > supports 23 64k "B" channels (that can carry voice or data) and 1 64k > "D" > channel that carries control information. Voice over ISDN PRI has the > advantage of a dedicated control channel for troubleshooting and > additional > call information from the telephone provider. However, it has 1 less > channel. > > So if you are ordering a data T-1, your only choice is ISDN PRI. -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38022&t=37983 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
