Video: SIP/VOIP and Lies from the NAB Show


From my sister platform, The Clickford Zone (YES I’M THE MASTER OF MY EFFING DOMAIN! Some people think my domain isn’t “TLD” or it’s “generic” – stop bullshitting me!)

Anyways, here’s a synopsis

The Lies My NAB Show Speakers Tell Me
I attended a seminar on Session Initiation Protocol, Voice over IP and Audio over IP (SIP/VOIP/AOIP.) ITN, the British TV network apparently replaced their digital telephone system to VOIP as they replaced their hybrids from traditional to VOIP. From my recollection, they did some of this using Pi boxes (NOT RECOMMENDED for PBX uses over 40 ports.) But what do I know I am just a content creator…
But the speaker that did the intro did an outro and said 20 years ago a Philly area radio station, if a mayor wanted to get on the air, they had to call the right number because the newsroom and hybrid phones were not integrated and apparently with VOIP this is possible. The same lies that say you need to be on VOIP to get “Caller ID”. Apparently the opening/closing speaker has slept under a rock for the last 25 years and with ISDN, you could mix studio hybrids into newsroom (Norstars, Legends, Magixs, Definitys, etc.)

This was the laundry list of the many lies speakers think they could get away with in the world of cutting costs and going to IP and IT based solutions. It’s so awesome!


Review: Polycom VVX 310 IP Phone

Happy Thanksgiving! I’m recovering from my dinner, and thought some updates were in order. Today I’m doing a review of these free to me Polycom VVX IP sets.


I found them at a local business that apparently moved. They were outside for “Free” so hey, why not?

These phones are an improvement from the SoundPoint IP sets that I still loathe to this day. Such improvements: you can adjust the set using a plastic thing on the back to three levels; second there is a tuck in space for the handset or headset cable. And BLFs most likely use the AUX jack and doesn’t do that infrared thing that I had doubted the reliability for a long time. Also in this range features wideband calling or high dynamic (HD) voice quality; and a backlit display (seen here) and a single LED with multi colors to show lamp status (or should I say in IT-speak “presence”?) and supports nearly 24 unique lines (or should I say “SIP sessions”?) It has cute screensavers too. If you want to see it, I have posted on my friends-only Instagram feed from mid October.

Continue reading

SIP Experiences, part two

SIP is like a PC, it’s a great technology. It’s like “I wanna have a computer on my desk but I dunno what I really want out of it”. As the 1990s came along, these little things became a nightmare for network administrators. Not only that but PCs had too much power for what many people didn’t need. What I am talking about is enterprises not consumers.

SIP is in fact much like a PC.

Continue reading

Dev Notes: SIP Expierences

Today’s writings is the memories I’ve forgotten without regrets (or whatever party animal line is) about personal runins with the Session Initiation Protocol better known as SIP.

These runins were not done when I was drunk, nor were these done professionally, and if I had a LAN party related to telephony maybe these stories would be more funny.

Continue reading

Rant: Prokop, Nerdtel User, part two

Nortel is really the phone guy’s equivalent to a computer nerd’s system. Very techie, very nerdy and very cocky, and cares less about average users. I don’t like being around with a Nortel Nerd, they are just plain old jerks.

Nortel 1110 Post, 2012

The evidence that proves this statement of over 3 years ago would be confirmed in yet another post I like to critique of Andrew Prokop, who works for Avaya and is helping dilute their brand name of being warm and non abrasive, to showoff, bragging and talking down to non technical people. This creates a stigma to the people who aren’t as nerdy and jerky like Prokop is.

Lets start in a recent post he did to No Jitter (it looked like it was a summer rerun, because some of the wording looked like another post he wrote.)

A lot has changed since I left college and entered the workforce. My first “real” job began July 5, 1983 at the company formerly known as Northern Telecom. My first desk telephone was an analog 2500 set. I did most of my work on a green CRT (Cathode Ray Tube) screen logged into a PDP-11 via a 9600 baud modem. There were no cell phones, e-readers, Google, or Microsoft Word. Heck, in 1983 there was barely a Microsoft.

Jeez, does this dude know English? You put the three letter acronym in the parentheses  (especially if its going to be referred as a herein type of statement.) If you follow the traditional English logic, he would keep referring the monitor as “Cathode Ray Tube” in every reference after!

Can this guy be more bragging of how he logged into a system everyday? A-hole!

My job used to be a place I went to. If my car broke down, I didn’t work. If the roads were too icy to drive on, I didn’t work. If I had to stay home waiting for a repair person, I didn’t work. I suppose I could have sat down with a pad of paper and wrote PLM code (my first professional programming language) by hand, but that wasn’t very practical.

These days, work is something I do and not a place I go. I work at home. I work from airports and hotel rooms. I’ve worked at my kid’s baseball games and swim meets. Today I am working from the cabin in Detroit Lakes, Minnesota.

Remember when we used to take sick days? Now, I just prop myself up in bed and call it my office. No matter where I am, I have immediate access to email, instant messages, video, and enterprise telephony. The presence jellybean on my Microsoft Skype for Business client might tell you that I am available, but it doesn’t let on that I am working in a coffee shop in downtown Minneapolis.


Just to make a Friday evening reading not as painful to read, I can’t help that an IT guy degrades the TLA even more by stooping to the CrazI MySpacE PartIGrl, of mixed caps

We are all aware of the Target security breach. Hackers snuck malware into Target’s Point of Sale (PoS) devices that allowed credit card numbers to be stolen at the time of a shopper’s purchase. The malware was successful because it was able to situate itself between the PoS application and the device’s encryption software. So, even though the data was secure on the Target network, there was a point in time when it could be easily read and therefore stolen.

Dude, “PoS” is spelled in all capitals. (I have to check Harry Newton’s Telecom Dictionary, but I think he spells it Point Of Sale to be quite honest.) Unless you want to be anti American, and write like a European because you don’t like how Americans used to write, than that’s your right. But don’t expect someone to call you out when you do come off as non American.

I do suspect this guy is somewhere in the Asperger’s Syndrome spectrum disorder. it’s the groups of people you want to throw a manual at their head!

This post was to just discuss how I can’t stand cocky IT guys and their condescending attitudes, their lack of strong English writing skills and writing religion, as he worships to internet port 5060 as his god…another IT pro no-no. No Religion of any type!

Again part of this post was from a No Jitter piece he wrote on the alleged death of VPNs.

That’s it, good night!


Telephony in Radio Broadcasts, part three

Jason, the guest writer on Avaya’s SIP agenda, has kindly given me some stuff to post while I’m out of the office at the Museum of Telephony. This is the last installment of this series.

Some technologies I never used:

 Other larger stations would use ISDN directly to the hybrid.  It’s my understanding that this is like presenting a PRI directly to the hybrid with no front PBX. It was stable, and the audio quality was as good as the CO’s switch.  In these cases, the caller’s analog or cellular connection was often the limiting factor for audio quality.  I would imagine these are the type of systems used by the big talk show hosts like Glenn Beck or Rush Limbaugh.

 Remote broadcasts in other markets are moving to a full internet based VoIP solution, where the remote broadcasters has a unit that speaks IP to the nearest internet connection and negotiates a VoIP “call” to the dedicated hybrid at the studio. I’ve even seen apps for smart phones that allow this style of connectivity using the phone’s hardware to do the VoIP work and the cellular data network for the data. I’m not sure I’d want to try this in a mission critical application!  On the other hand, it’d certainly sound better than a raw cellular call and doesn’t have the hassle of setting up a microwave link.

 In the studio, if SIP is king, Hybrids are available to consume SIP audio just like an IP phone.  I would imagine if you have good SIP trunks these sound delightful!

 There you have it.  Telephony meets Radio.  I think so long as radio is around, you’ll continue to have talk show callers, contest callers, callers who want to know the weather.  Despite the push to the Internet, telephony is still the preferred method for many radio listeners to communicate and have a voice in their station, no pun intended!


Telephony in Radio Broadcast, part two

Jason, the guest writer on Avaya’s SIP agenda, has kindly given me some stuff to post while I’m out of the office at the Museum of Telephony.

A Better Way

 The other company I worked for was a five station cluster.   There were 5 on-air studios and 3 production studios. Unlike the other station, it was possible to record production in either an on-air studio or a production studio.  The main PBX was a Toshiba Strata which served the office staff, but not the on-air callers. (News Talk excepted, see below).

 The philosophy at this company was that each station would have a hotline which consisted of one or more lines in hunting independent of the PBX.  The busier stations were equipped with a Telos One-x-Six which provided line appearances for up to six lines.  It had a single hybrid, which could choose any of the six lines at will. The one disadvantage of this system is that in most studios there was no way to screen callers with a handset if you were on the air.  I later found out that the One-x-Six could support a screener telephone on the second row if that was desired, but was not configured that way in most studios.

 Compared to the Symetrix, the One-X-Six sounded wonderful.  Answering the phone was as easy as punching the blinking line button, and you could press it again to “lock” to avoid accidentally hanging up on the caller.  If you wanted to conference multiple callers, you could simply “lock” the first line, grab the second line, and when you “locked” it, it would conference them together with the host. The “Next” button was indispensable for “Be the 10th caller” contests as it would automatically hang up the active line and answer the line that had been ringing the longest.  You’d typically hear, “Hi you’re caller number 2; Hi you’re caller 3, Hi you’re  caller number 4, …. Hi, you’re the tenth caller! Here’s what you won”.  The One-X-Six also provided hold music locally to the unit, so it was easy to play the appropriate station’s content depending on the station the caller called.  Ring alerting was done via an external ring/flash unit.

 The News Talk station was built about 10 years after the other stations, so the telephony was handled a little differently on that station.  Since the office system was fed with a PRI, it made sense to burn some of those channels for the News Talk which needed more lines than any other station in the cluster.  Calls would arrive on the Strata and would simultaneously ring the key telephones in both studios, as well as the analog lines on the One-X-Six, which were SLT’s off the Strata.  During normal operation, the screener in the production studio would screen the call on the bottom set of buttons on the One-X-Six and signal the on-air host which line was relevant. He would then hit the corresponding button on the top row and put the caller on air.

 You can see a One-X-Six in action


 If by some chance a caller called the office and needed to be put on-air, the office staff would transfer the call to the key telephone in the studio, then the host could hit “Transfer to Hybrid” and it would ring the Hybrid to arrive on-air.  The other studios would require the caller to hang up and dial the “hotline”.

 Ring muting was still accomplished the old fashioned way by physically disconnecting the speaker in the key telephone, but the flasher still alerted an incoming call if the mic was on-air.

 For special broadcasts, the cluster was also equipped with a Comrex Matrix codec.  Unlike the Hybrids, this system required a specialized unit in the field as well as in the studio.  The codec would dial the studio and a “modem” would auto-answer.  The Comrex pair would then negotiate an acceptable audio compression based on the quality of the phone lines. Think of it like VOIP, over a dedicated dial up connection.  If a suitable connection could not be established, the field unit could fall back and call the studio as a standard POTS call and act as a hybrid. In the later years we used this unit for baseball broadcasts and the quality was nearly as good as a Marti RPU (one way microwave audio link), but had the advantage of two way audio.


Telephony in Radio Broadcast

Jason, the guest writer on Avaya’s SIP agenda, has kindly given me some stuff to post while I’m out of the office at the Museum of Telephony.

Names have been generalized to protect the innocent.

 I’ve worked for two different radio companies in my employment history. With my interest in telephony, naturally I was interested in how the telephone callers got “on the air.”  Here are a few case studies on radio telephony that I’ve experienced.

 A quick definition for the un-initiated: In the radio business, a telephone hybrid is the piece of equipment that translates telephone audio (normally standard analog) into balanced signals to feed the audio console and does some active nulling to prevent too much of the announcer’s voice (which goes directly on-air via his microphone) from returning via sidetone on the telephone circuits.  A technical demo of a Hybrid

 How not to do radio telephony:

The first company I worked for was a small two station cluster.  Its engineer was of the mindset, “Let’s not buy the correct equipment, I can do it just as well with parts from Radio Shack and some creative circuitry!”  For the purposes of this case study, I will ignore the second station which was fully automated and used a single line Gentner on a dedicated CO for any telephony on that station.

 The other station had an on-air studio, and a production studio. As you can imagine, the on-air studio ran the live broadcast, while the production studio was used to record content, commercials, shows, and other audio to broadcast later.  The entire company was served by a Comdial key system with 3 CO lines.  The Comdial functioned on 4 pair wiring, with the outer pair providing signaling, and the inner pair presenting as a standard analog line to each station, switched according to the buttons on the handset.   Both studios shared one Symetrix TI 101 Hybrid, whose “line” was selected by an ordinary low voltage DPDT switch. To use the system, you would grab the incoming line on the handset, and it would be automatically coupled to the Symetrix according to if the switch was set to On-Air or Production.  The Symetrix bridged onto the center pair of wiring going to each telephone, so whatever line on the set was selected, that’s the line you got on the Symetrix.

 Feedback elimination was crudely accomplished by a switch drilled into the telephone base which cut off the wiring from the telephone microphone. So when you were ready to put a caller on-air, you’d answer the call, get the caller ready on the handset, flip the switch, then talk to them using the on-air microphone, fed via the Mono bus on the console. As hybrids go, the Symetrix was about as basic as they came, with all parameters being controlled with knobs rather than with fancy automatic gain control.  Did I mention that the Symetrix was in the production studio so it was impractical to make real time adjustments to an on-air caller?

 Ringer muting when the mic was live was also accomplished manually in each set by a relay that cut off the speaker in the set.

This station also had one other funny quirk.  When a local vendor discontinued their satellite feed of the local sports roundup, we solved the problem in a most low-tech fashion.  Shortly before the roundup was to air in the morning, we’d call the station and ask the secretary to put us on hold. Then, we’d record the roundup off their hold music!

 If you needed to have something from the telephone live on-air and record something else, you were simply out of luck!   As you can see, this is how NOT to do radio telephony.