Telephony [rss]

PodSnacks: Remote Call Forwarding (RCF)

Posted Thursday, October 30, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q4/rcf.mp3
Back to voice, and today we talk about a service that I recently had develop material on so I could add it to a course I'm preparing. So you might as well get the benefit of some of my work. The topic is remote call forwarding (RCF), and I'll Read More...

PodSnacks: Local Loop

Posted Tuesday, October 28, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q4/local_loop.mp3
Today we shift to the world of the voice and talk about a component of the PSTN that has changed significantly since the days of Bell and Watson: the local loop . I don't have a lot of time to write more, so if you're interested, give a listen Read More...

PodSnacks: Primary Rate Interface (PRI)

Posted Friday, October 24, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/pri.mp3
The other day, Peter gave us the low-down on the Basic Rate Interface (BRI). This is only one of two ISDN interface options. The other one is the Primary Rate Interface (PRI). In North America, the PRI is provisioned over a T-1 . Like the BRI, the PRI Read More...

PodSnacks: Basic Rate Interface (BRI)

Posted Wednesday, October 22, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/bri.mp3
You know, these PodSnacks are something like a stream of consciousness. Our recent discussion of PPP included some references to ISDN , so I thought it might be a good idea to take a look at the two ISDN interface options. For that, we're going to Read More...

PodSnacks: Electromagnetic Spectrum

Posted Thursday, October 16, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q4/spectrum.mp3
Today we shift to a discussion about something we all use every day, and probably don't think about very often: the Electromagnetic spectrum ! Indeed, without it you could net even read this page. Tune in and I'll tell you all about it. As always, Read More...

PodSnacks: DID, DOD, and DNIS

Posted Tuesday, October 14, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q4/did-dod-dnis.mp3
Today we shift to a discussion about voice-related services and we take a look at Direct Inward Dialing (DID), Direct Outward Dialing (DOD), and Dialed Number Identification Service (DNIS). Tune in and I'll tell you all about them. As always, you Read More...

PodSnack: Key System

Posted Wednesday, October 08, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/key_system.mp3
The other day you got a quick summary of what a PBX is. Today Dave tells you about another phone system found on the business premises: the key system . You can listen to (or download) today's PodSnack by clicking here , or you can use the Flash player Read More...

PodSnacks: Private Branch Exchange (PBX)

Posted Monday, October 06, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/pbx.mp3
Let's go back to some basics, and back to telephony. Today, Dave tells you a little bit about what a PBX is, and what the trends are in the industry. You can listen to (or download) today's PodSnack by clicking here , or you can use the Flash Read More...

PodSnack: Skype

Posted Wednesday, October 01, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/skype.mp3
Hey, we just roped in another Hill Instructor to talk to you! Today, Peter is going to give you the low-down on Skype , and then tomorrow he's going to introduce you to another very promising Internet application, from the same people who gave us Read More...

PodSnack: T-3/DS-3

Posted Friday, September 26, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/t-3.mp3
Thanks to Paul, we can add one last little snippet of information to that series on T-1 that we did. Anther T-carrier system that is widely implemented and sold by the carriers is T-3 . A T-3 is a higher-speed TDM circuit that has the capacity for 28 Read More...

PodSnacks: Telephone

Posted Thursday, September 18, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q3/telephone.mp3
My colleagues love to pick on me that I can fill five to six minutes on very basic concepts, and I'm going to do it again today. Our topic is the lowly telephone . I found it interesting to put together. I hope you find it interesting to listen to! Read More...

PodSnacks: Superframe (SF) vs. Extended Superframe (ESF)

Posted Wednesday, September 17, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/t-1_framing.mp3
Today we wrap up the T-1 series with a look at the two predominant framing patterns used: Superframe (SF) and Extended Superframe (ESF). And since we've been your hosts all along for this series, Dave and I will take you through this last concept Read More...

PodSnack: Robbed-bit Signaling

Posted Monday, September 15, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/robbed-bit.mp3
Last Friday we talked about the difference between in-band , and out-of-band signaling. This concept sets the stage for talking about a particular form of in-band signaling used on a T-1 . This form of signaling is called robbed-bit signaling and it is Read More...

PodSnacks: In-band versus out-of-band signaling

Posted Friday, September 12, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/in-band_out-of-band.mp3
You still with us? Today, we continue the series on the T-1 with a look at the general notion of how signaling can be related to the transmission system and the user's data. Because a T-1 is so often used as a trunking facility between a CO switch Read More...

PodSnacks: ZCS versus B8ZS

Posted Wednesday, September 10, 2008 6:00 AM by mgilbert :: 1 Comments
Filed under , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/zcs_b8zs.mp3
Yesterday, we spent some time looking at the requirements for ones density on a T-1 . We saw that this requirement is met by the voice encoding process when the T-1 is carrying voice, but we noted it is problematic when the T-1 is carrying data. Today Read More...
More Posts Next page »