Have an issue where unity plays back choppy/garbled audio at a remote site across a WAN only when file transfers are occurring for calls coming in on PRI at remote site. When a IP Phone calls into unity or a IP phone at the main site (G729) the quality is fine during the same file transfer. The file transfer only effects calls on PRI of the gateway. The WAN data router and PRI on same router. A 2811 MGCP gateway.
The WAN connection at head end is a 4meg (4 T1s) multilink frame relay connection to a MPLS provider. Remote site is a single T1 (frame). There are 2 other remote sites (3meg each) with similar setup and no issues.
Anyone see this before where unity playback is only garbled over external calls on PRI at a remote site? The T1 PRI is clean and no errors. Clocking on 2800 is clocking off the PRI and is network-clock source.
the 2811 router uses the C5510 DSPs which are affected. "Garbled audio can be observed with Unity, CRA, IPCC Express, Extended Services or CCC. These products are known to produce the offending condition." (excerpt from document)
see if you can use G.711 across the WAN for a test and check if the symptoms are the same. (may have to do after hours depending on WAN link and users)
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...