Faxing over VoIP, and other goodies.
Recently I was working with a small business that purchased their building. Half of the building had been rented out, and the renter had left. The building owner had been unable to find a new renter for the entire space so he was considering renting the offices out individually as executive suites. In order to do that he would need to supply a phone, internet, fax, etc…etc…
We began talking about how a new phone system might solve one of his problems. He was willing to pay for the hardware, but did not want the monthly re-occurring bill to go up. Good news at least from my perspective was that he had been with his current provider for a number of years and had not reviewed his bill. Consequently, he was paying too much. See Money Saving Tips for the New Year!!! Additionally, with competition up, prices are coming down.
I have been installing Panasonic phone systems for years now, and I knew the Panasonic KX-NCP1000 would solve the problem, and since Panasonic is currently running a promotion for new and upgraded systems, our price was very competitive. Problem was, where and how to get the best deal on the needed phone and data services.
I am partial to PRI’s, love what they can do, and I appreciate their reliability. We have a PRI in our offices. I need it to demonstrate functionality to perspective new customers and I also have a mini-executive-suite-scenario here at our building. We have 4 companies running on our PRI, I supply phone, voice mail, private fax number, all from our Panasonic phone system and our PRI. It works perfectly 99.999% of the time. So… the problem with a PRI is they are expensive, today a PRI will cost you between $400 and $500/month plus taxes, and you still need internet.
Our perspective customer would need the ability to make probably 6 to 8 simultaneous calls and would need to provide probably 5 or 6 fax numbers. A PRI, it can handle 23 simultaneous calls and you could have as many phone numbers as you like. On a PRI each phone number typically costs fifty cents per number per month. So, 6 or 8 companies with a main phone number and a fax is a breeze for a PRI. Actually the PRI would be underutilized and underutilization costs money. So the simple answer is VoIP and the Panasonic NCP1000 supports VoIP, no problem in G.711 G.729 H.323 and faxes in T.38 modes.
I don’t understand why, many people think VoIP means it is free. It is not! You have to pay the vendor for the phone numbers, the number of simultaneous calls, you will need a special router that supports QoS (Quality of Service) lately the router manufacturer’s are getting on the VoIP bandwagon and they are licensing the number of VoIP calls through their routers. And most important you need IP bandwidth. If you want a first rate connection, you want G.711. G.711 requires 88K per call, so if you have 10 calls going you will need 880K. A T1 is considered 1540K. So you see 10 calls eats up more than half of your T1. And don’t forget when you are talking you need to consider you upload speed, not just your down speed. Around Las Vegas, Cox says you can get 10 megs , they rarely tell you what the up speed is and they won’t guarantee it. So, this means T1’s and bonded T1’s
You can find a dynamic T1 with a PRI for under $700 + tax or you can get a full T1 and a PRI for $800 + tax. So for full T1 of data and the ability to make 8 simultaneous calls, the VoIP vendor I like charges $12.75 to $15/m/call so if you say $13/ call and 20 DID numbers. You have 13X8= $104/month.
DID’s with VoIP providers is another story, if you want them to be able to have different outbound CID and be available for a directory listing plan on spending $6/m/DID. Fax numbers don’t seem to matter so they are $1/m . So, let’s say, 6 companies at $6 and 6 faxes at $1 will be an additional $42/m for a total of $146/m plus the cost of the T1 say, $325 + taxes, grand total $471. The VoIP provider I like will give you a router that supports QoS, but will not give you access to setup port forwarding so you still need a QoS router. One of the least expensive is from Edgewater Networks, and an EdgeMark 4500 that will support 10 calls will cost $449+ and allow a couple of hours to set it up and test. Now you have to deal with Faxing. I was ranting and raving about costs, reliability, faxing, etc, etc the other day to my favorite VoIP provider sales engineer, and here is part of an email I got back.
“Faxing is one of those things we always recommend you test – as we discussed yesterday, we support T.38 and faxing over G711 codec.
Some customers are happy faxing over VoIP and some others are not. It mostly comes down to the amount of faxes you send/receive.
If I am speaking to a law office or medical/insurance company, etc…I would recommend they keep an analog fax machine as huge files are faxed in and out multiple times a day, all day.
Our internal fax completion rate is 90-95%, while the VoIP industry standard is only 80%. That said, with a 90% completion rate 1 out of 10 pages could not come through. We have done many things internally to ensure fax completion; I have copy/pasted one of our engineer’s comments:
We built out a new profile to force T.38 negotiation between our SBC and customers under most circumstances. While the fax call may still go over a carrier that does not support T.38, our SBC will transcode the T.38 into G.711u, and the fax should still complete. Typically, fax failures over G.711u are caused by low-quality DSPs in end-user ATAs or by the fax machine itself if it is an IP-enabled fax. Our DSPs do a much better job of converting T.38 to G.711u and converting G.711u to T.38. This should vastly improve fax success rate since it takes the job away from the lower quality end-user DSPs.
And in regards to another concern we received:
Also, it is worth noting that we have a special profile that can be set up on his connection that forces T.38 on all fax calls. This improves performance considerably as it should not ever try faxing over G.711, regardless of what our upstream providers support.
Also, I always recommend keeping maybe one or two analog fax lines (depending on the size of the business) in an office to be used as a backup line/in case of failure, the alarm line, etc…with that, you will still see cost savings.”
Randy here again, get that, average reliability 80% their success rate 90-95%. So they recommend you keep 1 or 2 backup faxes. By the way B1 lines pretty much cost $20-25/ month each. Add $25 to the monthly bill. All that said, my prospective customer needs 6 fax numbers. Oh and his T1, if there 6 calls in progress at 88K that’s 528K of the 1540K is being used up to talk.
So with VoIP when you add all this up $471 + at least 2 faxes at $25/m you are at $521/m plus taxes for 8 calls of VoIP. You can get a dynamic T1/PRI for under $700 plus tax, you don’t need a special router, it is more reliable it can make 23 calls. On VoIP if the calls are not going through, it could be the phone equipment, the VoIP provider, the router, the T1 provider, everyone pointing fingers at one another. If you have a PRI, it is either the phone system or the PRI provider, much simpler, works every time.
The VoIP solution is cheaper, the question is, is it worth it? By the way, after all that, my prospective customer said his prospective new renters said no. So, no go, whew, that was a mouth full!
Randy Dell

