Date: Tue, 3 Mar 2015 13:55:13 -0500 From: Janos Dohanics <web@3dresearch.com> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Advice on net/asterisk Message-ID: <20150303135513.dfd90edc61738291d1e2fa53@3dresearch.com> In-Reply-To: <CA%2BtpaK3MWimphraLDV5iR6_ovFdx1FwbQfuXeYGbiodrmR4JAQ@mail.gmail.com> References: <20150303100752.bc81306b8346ca640247e2e6@3dresearch.com> <CA%2BtpaK3MWimphraLDV5iR6_ovFdx1FwbQfuXeYGbiodrmR4JAQ@mail.gmail.com>
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On Tue, 3 Mar 2015 11:19:30 -0600 Adam Vande More <amvandemore@gmail.com> wrote: > On Tue, Mar 3, 2015 at 9:07 AM, Janos Dohanics <web@3dresearch.com> > wrote: > > > Hello List, > > > > I'm considering to use net/asterisk for an office with 10-12 phones. > > I'd welcome your suggestions, advice, tips, comments... > > > > Are you planning on PRI or SIP? I'm not sure how to make an educated decision on this, that is, if we could get by with SIP. I tried http://www.voipqualitytest.com/ and this is what it shows: 1. Random time during work day: Speed test statistics --------------------- Download speed: 10537 kbps Upload speed: 1115 kbps Download consistency of service: 64 % Upload consistency of service: 67 % Download test type: socket Upload test type: socket Maximum TCP delay: 118 ms Average download pause: 1 ms Minimum round trip time to server: 54 ms Average round trip time to server: 57 ms Estimated download bandwidth: 13651 kbps Route concurrency: 1.2954974 Download TCP forced idle: 33 % Maximum route speed: -- VoIP test statistics -------------------- Jitter: you --> server: 1.1 ms Jitter: server --> you: 24.5 ms Packet loss: you --> server: 0.0 % Packet loss: server --> you: 0.0 % Packet discards: 0.0 % Packets out of order: 0.0 % Estimated MOS score: 3.6 2. Same, after introducing additional outgoing traffic: Speed test statistics --------------------- Download speed: 10920 kbps Upload speed: 705 kbps Download consistency of service: 85 % Upload consistency of service: 51 % Download test type: socket Upload test type: socket Maximum TCP delay: 71 ms Average download pause: 1 ms Minimum round trip time to server: 54 ms Average round trip time to server: 87 ms Estimated download bandwidth: 12194 kbps Route concurrency: 1.116652 Download TCP forced idle: 51 % Maximum route speed: -- VoIP test statistics -------------------- Jitter: you --> server: 8.7 ms Jitter: server --> you: 3.6 ms Packet loss: you --> server: 2.0 % Packet loss: server --> you: 0.0 % Packet discards: 0.0 % Packets out of order: 0.0 % Estimated MOS score: 2.5 3. And with incoming traffic: Speed test statistics --------------------- Download speed: 9693 kbps Upload speed: 1465 kbps Download consistency of service: 48 % Upload consistency of service: 66 % Download test type: socket Upload test type: socket Maximum TCP delay: 122 ms Average download pause: 1 ms Minimum round trip time to server: 59 ms Average round trip time to server: 87 ms Estimated download bandwidth: 12446 kbps Route concurrency: 1.2840027 Download TCP forced idle: 51 % Maximum route speed: -- VoIP test statistics -------------------- Jitter: you --> server: 0.5 ms Jitter: server --> you: 13.6 ms Packet loss: you --> server: 0.0 % Packet loss: server --> you: 0.0 % Packet discards: 0.0 % Packets out of order: 0.0 % Estimated MOS score: 3.9 I guess a MOS score of 2.5 is below what's acceptable, but please comment. -- Janos Dohanics
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