{"id":8478,"date":"2015-03-23T16:58:50","date_gmt":"2015-03-23T23:58:50","guid":{"rendered":"http:\/\/www.aerocominc.com\/?p=8478"},"modified":"2017-05-16T09:54:40","modified_gmt":"2017-05-16T16:54:40","slug":"how-to-get-perfect-call-quality-on-your-sip-trunks-part-1","status":"publish","type":"post","link":"https:\/\/www.aerocominc.com\/info\/how-to-get-perfect-call-quality-on-your-sip-trunks-part-1\/","title":{"rendered":"How to Get Perfect Call Quality on Your SIP Trunks \u2013 Part 1"},"content":{"rendered":"

\"TwoHere is something I\u2019m hearing a lot from IT Professionals, these days.<\/p>\n

IT Pro<\/strong>: \u201cWho’s the best\u00a0SIP<\/a><\/span> VoIP provider? We are\u00a0planning to\u00a0buy a new\u00a0IP-PBX for my company with approx. 50 users and we are leaning toward using SIP trunks (via our Internet connection), instead of an ISDN PRI<\/a>, <\/span>for our phone lines. We have a 100M dedicated fiber circuit for Internet so I think our bandwidth can handle it but I\u2019m still a little concerned about call quality. I\u2019d love some feedback on SIP providers that you\u2019ve had good experiences with.\u201d<\/p>\n

Me<\/strong>: “Rather than running a 3rd party\u2019s SIP trunks over your current ISP, have you considered a converged\/integrated SIP circuit?<\/a><\/span>”<\/p>\n

IT Pro:\u00a0“What\u2019s that?”<\/p>\n

The Benefit:<\/strong><\/p>\n

Before I bore you with details, let me tell you the benefit of this service. This technology gives you the SIP trunks you need BUT guarantees 100% perfect call quality at all times. Oh, I almost forgot\u2026 FOR THE SAME PRICE you\u2019ll pay for your separate SIP trunks and a 3rd party Internet connection. Oh, and this is true whether we’re talking about SIP or Hosted VoIP<\/a><\/span>.<\/p>\n

The Breakdown:<\/strong><\/p>\n

What is a Converged\/Integrated SIP and Internet Circuit?<\/em>
\nThe provider will deliver a circuit (i.e. Fiber<\/a><\/span>, Ethernet over Copper<\/a><\/span>, DS3<\/a><\/span>, T1<\/a><\/span>, etc.), and they will terminate it into an Integrated Access Device (IAD), which will sit in your phone room. From the IAD, the service provider will give you one Ethernet hand-off for SIP voice service and another Ethernet hand-off for your Internet access.<\/p>\n

If nobody is on a call, you get the entire circuit for Internet. If someone picks up the phone, the call takes priority and reduces your Internet speed by 32k-100k, depending on the voice codec<\/a><\/span> the provider uses for your SIP trunking service.<\/p>\n

\"\"<\/a><\/p>\n

How can they guarantee call quality?<\/em>
\nThat IAD device is a router that is running a private IP-VPN WAN technology called Multi-Protocol Label Switching (MPLS)<\/a><\/span>, between your location and the providers\u2019 central office switch. Your voice packets are prioritized over your Internet traffic and since it\u2019s a private circuit back to the provider, your voice is protected the entire way.<\/p>\n

This is different than SIP trunks over a 3rd party ISP because in that scenario, your voice calls are being sent back to the SIP providers via the public Internet. Once your data packets hit the public Internet, you cannot control latency, packet loss or jitter, all of which will affect voice quality.<\/p>\n

In addition, if you run your SIP trunks over a 3rd party ISP, the SIP provider cannot guarantee uptime because (of course), it\u2019s not their circuit and they have no control if your circuit is taking errors or goes down.<\/p>\n

How is it the same price?<\/em>
\nIt\u2019s actually not. It\u2019s often LOWER priced. Either way, it makes sense that it\u2019s the same price. You are paying for the same two services: 1) A large, dedicated Internet access circuit; and 2) SIP Trunks.<\/p>\n

How is it sometimes lower? Because when you\u2019re spending more money with a vendor, you get more discounts.<\/p>\n

Why didn\u2019t my SIP trunking provider offer this?<\/em>
\nBecause most SIP trunking providers do not have the ability to sell circuits and therefore, the only method they can deliver their SIP service is through the public Internet.<\/p>\n

You have to dig a little to find providers that offer Integrated SIP service. Or you can just contact us<\/a><\/span> at AeroCom and we\u2019ll run a quick search for your address and tell you all of the Integrated SIP providers available.<\/p>\n

What\u2019s the catch of this service?<\/em>
\nThere are two things that can be a deal killer if you want this service:<\/p>\n

    \n
  1. If you are stuck in a long-term agreement with your current ISP. If that\u2019s the case, you can check out Part 2 of this article OR you can order a smaller circuit that has just enough room for your voice and have it double as your back-up Internet. Want to know a secret… this\u00a0is actually the way most providers are delivering ISDN PRI T1’s these days… yep, it’s really a dedicated SIP circuit with an IAD on the end of it, that is converting the signal to PRI.<\/li>\n
  2. In order for a service provider to deliver SIP Trunks to you via an Integrated access circuit, you must use an approved IP PBX. Each provider has a list of approved PBX\u2019s that they\u2019ve tested and can guarantee will work perfectly on their service.<\/li>\n<\/ol>\n

    There you go! SIP without the concern of poor call quality or down time!<\/p>\n

    But WAIT!<\/strong> There is one other way you can do this. Read\u00a0Part 2 of this article<\/a><\/span> to learn the other technology you can use to get better call quality for your SIP voice trunks.<\/p>\n

    Have an AeroCom rep help you shop hundreds of SIP providers to find your company’s top 3.<\/span>\u00a0Click below.<\/h5>\n