The "tel" is a common analog telephone set. The KS is a digital telephone set. There's an IP network between the 1750 and the 5300 (not indicated).
Analog connections exist only at:
- the connection between the PBX and the 1750 (FXS port)
- the connection between the analog phone and the PBX
The PBX connection to the PSTN is digital.
In the first case, one of the analog connections is on the KS side (the connection between the PBX and the 1750); the only remote analog connection, from the KS user standpoint, is the one between the analog phone and the PBX
In the second case, both analog connections are remote, from the KS user standpoint: both are near the analog phone.
In the first setup, the KS user has a *lot* of echo when both users talk at the same time. Also, the KS user perceives that the other party's voice clips a lot (the KS user misses many words, not only part of words). When those voice clips occur, echo of the KS user stops occuring. Notice that the analog phone user doesn't miss *anything*.
In the second setup, what a surprise: there's NO echo at all, either for the analog phone user or for the KS user!! And there's no voice clipping when both users talk at the same time.
i think you have a problem with the DSPs on your Gateway. Try to allocate the DSP until your failure occurs. Look with the "show voice dsp" command which DSP will be allocated. The voice clips should occur always on the same DSP.
Workaround: "clear interface" or "shutdown and no shutdown".
just to clarify: when you tell me to look the DSP, do you refer to the 5300? or 1750? And should the "clear interface" be done at the 5300? and does the "shutdown/no shutdown" refer to the Ethernet interface? of which gateway?
Do you think these measures would help on the echo problem too?
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 ...
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