Thanks We have a pretty traditional CUCM/Unity/UCCX setup with both TDM and SIP trunks in multiple offices and countries. I'm going to be able to move the call center treatment and routing functions to another system which leaves me really just left with a voice path and voice mail… can't see a big reason for me to keep dealing with all of the rest of this stuff.
We have SRST right now for locations with PSTN connections and unless we ditch that the capex ROI doesn't get very interesting. Centralizing on SIP trunks would be ideal but will have to look at the reliability of Internet and MPLS in each remote location. -rd On Aug 23, 2012, at 7:56 PM, lopser wrote: >> From: tech-boun...@lists.lopsa.org [mailto:tech-boun...@lists.lopsa.org] >> On Behalf Of Ryan Dorman >> >> Is anyone out there using a "cloud" telephony system that they moved from >> an on-prem system be it voip or TDM? Vendors you liked? Vendors you >> didn't? Things you would have done differently? >> >> Thanks in advance for any replies. > > Hrmmm... I've use every conceivable variation of solution for this, and > there's simply no easy answer. If you use the pots / pri / traditional, then > you know exactly what to expect, and that is to say, reliable, predictable, > easy to plan for, feature lacking, probably expensive compared to other > options. > > If you get a provider that does SIP trunking, it's a more finely grained > scalability solution, because only the requisite bandwidth is sucked down by > the voice (unlike PRI, where the channels are more than likely dedicated.) > However, very few people do QoS right. So you have to be careful. The test > I use is like this: I run a ping monitor to something on the internet (dns > server) and then I start a whole mess of simultaneous file transfers. If the > traffic overload causes any packets to drop, then QoS is implemented poorly, > and you will have real life reliability problems. Keep working until the > behavior changes. > > The main advantage of a sip trunk as opposed to plain old internet voip is > QoS end-to-end. So you're guaranteed a certain level of quality. > > You can use plain old voip providers, such as vonage, 8x8, and so on. You > simply configure some devices to connect to some sip service provider, and > the quality is internet quality. Which is to say, almost always excellent. > But sometimes, traffic is really bad, and your quality might be degraded, or > even unusable. > > In retrospect, the one thing I would say, is from now on, I'll always opt for > good features (soft phones, voicemail forwarding attachments, etc) and I > don't want to give up control. I really hate it when you're subscribed to > some service provider, so it's hard to jump ship, and they are no longer > providing the service or quality you expect. To me, it's always important to > be able to switch providers easily. > This email and any attachments may contain confidential and proprietary information of Blackboard that is for the sole use of the intended recipient. If you are not the intended recipient, disclosure, copying, re-distribution or other use of any of this information is strictly prohibited. Please immediately notify the sender and delete this transmission if you received this email in error. _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
