SIP Pricing: How much are 11.338 milliseconds worth?



  • As I'm inching closer to the completion of the Improve-Our-VoIP-Solution project, I'm taking another look at SIP trunk pricing. Now that the toll fraud has come to an end, I finally have a normal bill from which I can calculate some fairly accurate numbers. If I translate this month's bill into Twilio and Voip.ms's fee structure, this would be the result. (See below for the breakdown of costs -- yes, we have a ridiculous number of DIDs)

    Twilio: $227.12
    Voip.ms: $229.04

    Since we're so close in price, it seems like a toss-up with Twilio having the slight edge. As part of my testing, I looked at ping times between my Vultr instance and POPs for my test number (which is an Atlanta based number, which I'm assuming when we port our numbers, we'll probably be using the same POPs). These are the closest available POPs.

    Twilio: New Jersey at 12.853 ms average ping
    Voip.ms: Atlanta (Atlanta2) at 1.515 ms average ping

    Doing some test calls, the quality seems to be the same for both. I'll try them both for a longer conversation this weekend (60 minutes). As far as configuration, it was easier for me to configure FreePBX to play nice with Voip.MS, but as I become less of a n00b, the challenge of configuration will most likely become irrelevant.

    So, as food for thought, I'm curious to know how much you folks value 11 milliseconds of latency?

    Cost Breakdown

    Minutes

    Inbound
    60/60 (Twilio)

    • Non-Toll Free: 5,649 at $0.0045 / minute ($25.42)
    • Toll-Free: 2,653 at $0.018 / minute ($47.75)

    6/6 (Voip.ms)

    • Non-Toll Free: 4,363.9 at $0.009 / minute ($39.28)
    • Toll-Free: 2,237.2 at $0.019 / minute ($42.51)

    Outbound

    • 60/60 (Twilio): 6,421 at $0.007 / minute ($44.95)
    • 6/6 (Voip.ms): 5,376.3 at $0.01 / minute ($53.76)

    DIDs, E911, Hosting

    100 DIDs

    1 Toll-Free DID

    E911 per month

    Hosting: Vultr: $6.00 / month


  • Service Provider

    Until you get to "too many" they are worth just about nothing.


  • Service Provider

    Basically, if you can't hear the delay, it doesn't matter.



  • A delay becomes audible at 28-30ms. Not sure if that translates the same to ping times...


  • Service Provider

    @rojoloco said in SIP Pricing: How much are 11.338 milliseconds worth?:

    A delay becomes audible at 28-30ms. Not sure if that translates the same to ping times...

    That's a local delay. A telephone delay is closer to 200ms. This is because there is always a huge delay in the other person responding. If it is a delay where you hear your own voice, yeah, 30ms will do it.



  • 100 DIDs is a ridiculous number? I guess it is relative to the number of people in your org and what you do. We have about 100 people working in our org and we also have 100 DIDs with 4 brands that each have their own main numbers and direct tech/customer support numbers. Add in some e-fax lines and sales and other certain people wanting to be accessible with a DID then it adds up.



  • @wrx7m said in SIP Pricing: How much are 11.338 milliseconds worth?:

    100 DIDs is a ridiculous number? I guess it is relative to the number of people in your org and what you do. We have about 100 people working in our org and we also have 100 DIDs with 4 brands that each have their own main numbers and direct tech/customer support numbers. Add in some e-fax lines and sales and other certain people wanting to be accessible with a DID then it adds up.

    I didn't include much context. 50 of those aren't being used, but we pay for them because it's part of our T1 package.


  • Service Provider

    @eddiejennings said in SIP Pricing: How much are 11.338 milliseconds worth?:

    @wrx7m said in SIP Pricing: How much are 11.338 milliseconds worth?:

    100 DIDs is a ridiculous number? I guess it is relative to the number of people in your org and what you do. We have about 100 people working in our org and we also have 100 DIDs with 4 brands that each have their own main numbers and direct tech/customer support numbers. Add in some e-fax lines and sales and other certain people wanting to be accessible with a DID then it adds up.

    I didn't include much context. 50 of those aren't being used, but we pay for them because it's part of our T1 package.

    @wrx7m it is also part of how his organization chooses to operate. This was discussed during the Q&A at one of my sessions during MangoCon in fact.

    Also, 100 DID is nothing really. It is a minor recurring cost to be dealt with in the over all scheme of the telephony picture.


  • Vendor

    @scottalanmiller said in SIP Pricing: How much are 11.338 milliseconds worth?:

    @rojoloco said in SIP Pricing: How much are 11.338 milliseconds worth?:

    A delay becomes audible at 28-30ms. Not sure if that translates the same to ping times...

    That's a local delay. A telephone delay is closer to 200ms. This is because there is always a huge delay in the other person responding. If it is a delay where you hear your own voice, yeah, 30ms will do it.

    Jitter is worse as you are at the mercy of what the buffer can fix on the other side. Standard DSP's I think cap out at 120ms, after that it all goes to hell.



  • @eddiejennings said in [SIP Pricing: How much are 11.338 milliseconds worth?]

    Twilio: New Jersey at 12.853 ms average ping
    Voip.ms: Atlanta (Atlanta2) at 1.515 ms average ping

    Still trying to figure out where you are getting Twilio New Jersey? It seems like you are talking about the VULTR data centers to your office, and not the VULTR data centers to the pops.

    Twilio is 35% cheaper on inbound and at least 15% cheaper on outbound. Your DID numbers and toll free costs are irrelevant. You need to dump the DID's you arent using, maybe keep 5 extra. If you can dump half thats $600 per year.

    On actual costs see below. You are clearly saving money now and any increase in call volume will only add to those savings. You could save on toll free with a couple other people, but for ease of administration I would keep it all at one place.

    And remember, those PRI DID's cost the CLEC anything. I had a guy trying to port 800 DID's to me once and we ended up issuing 150 of our DID's, forwarding theres for 6 months and dumping them. My DIDs cost me nothing, porting those 800 would have cost me $200 per month and he would have been paying $800 per month to us.

    Twilio
    Inbound: 5,649 at $0.0045 / minute ($25.42)
    Outbound: 6,421 at $0.007 / minute ($44.95)

    $70.73

    VOIP.MS
    Inbound: 4,363.9 at $0.009 / minute ($39.28)
    Outbound: 5,376.3 at $0.01 / minute ($53.76)

    $93.08

    And imagine these numbers in multiples. $700 versus $930.

    Everything I hear about Voip.ms is good, but Twilio's infrastructure is many times larger. They are already cheaper. I cant really speak to Voip.ms but have been meaning to give them a try.



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