Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest.
You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: > Hi All, > > Quick question I hope you can help me with. > > How many D channels does a PRI have? > > I always thought it was two, but its states 1 in most places. > > Text taken from the CCNP remote access guide (to make it more > confusing): > > there are 30 timeslots, leaving 2 timeslots for signalling and > framing. > Timeslot 0 is used for framing and timeslot 16 is used for > signalling > (counting 0-31). E1 PRI makes use of this same principle. > Timeslot 16 is the > D channel and timeslot 0 is used for framing information. > Please advise. > Regards,DJ > > > > --------------------------------- > With Yahoo! Mail you can get a bigger mailbox -- choose a size > that fits > your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65079&t=64999 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
