Video conferencing will not work over a 1720 ISDN link. Since 1720 is not a gateway, H.320 systems cannot dial into the ISDN interface. If you had H.323 in mind, not enough bandwidth is available to account for video + IP overhead + PPP overhead which I assume would be used for ISDN connect.
Voice-only is a much easier proposition than video. Bandwidth used on a voice call is dependant upon which audio codec you use. Typically, mostapps use G.711 (3 khz @ 64k) or G.729 (3 khz @ 8k). Remember to add roughly 10% for IP overhead. So for your particular application, I don't see the ROI of doing IP voice over a dial-up ISDN link. Whether you compress voice or not, you must still dial up at least 1 bearer channel to do voice. To the extent that you already have active channels for data traffic, you may be able to route some voice calls over that path as well using G.729. Not sure of the pitfalls of using routers. Presumably, you will use PPP between routers adding even more overhead to the voice packets. Look at a permanent connection of some sort between your offices for both voice and video, this may cost justify your desired application
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...