I have many customers enquiring about IPT and the Internet. They typically utilise ASDL lines to access the Internet and VPN's to transport data between branch/remote offices and their HQs, and are interested in running IP telephony alongside.
Does anyone know if Cisco have any design guidelines/suggestions for this scenario, or are we only limited to IP telephony on a private network (or MPLS).
I can say from experience that it will work, but you will not be able to guaratee quality of service over the Internet. I have a vpn 3002 at home that vpn's to a vpn concentrator over my cable modem. My phone registers and I have had good success with voice quality. I would say about 95% of the time the voice quality is excellent. 2 points I would make I am not sure you will see official guidelines and support since you have not control of the QOS on the Internet. The next point is as long as the users understand not to expect 100% of the time excellent vocie quaitly they will probably be happy with it. Keep in mind that the reason you cannot quarentee the voice quality is because of the Internet and the inablity to control QOS not because of the IP phones and callmanager. You can sometimes get deals with service providers to provide that QOS for you but you cannot leave their network and it will cost you big $$.
Pretty much a ditto here. I am rolling this out right now with a little different scenario. As long as you convey to the users upfront what it actually is capable of and not then you should be fine. The official Cisco line is that it is not recommended but that's only due to the lack of QoS. If possible, keep your hops to a minimum and the latency below 200ms. ADSL is a little more unpredictable than SDSL so plan for some jitter and robot voice from time to time but overall you should be ok.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...