The HWIC-4T1/E1 is described as a T1/E1 high speed WAN interface card (WIC). As you know, WAN interface cards are used to connect your sites to each other. This is different from VWIC or VIC cards which may be used for voice termination, for example where you have a PRI configured on the router to terminate incoming voice calls from the PSTN. You need DSPs when you are doing voice termination. Voice termination applies to a call that has two call legs, one leg on a time-division multiplexing (TDM) interface and the second leg on a VoIP connection. The TDM leg must be terminated by hardware that performs coding/decoding and packetization of the stream. This termination function is performed by the DSP resources.
You would also need DSPs on the router if you need to configure media resources such as conferencing or transcoding resources on the router.
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...