Hi, I have recently migrated numerous sites from Call Manager Express to the central Call Manager Cluster using H323 for call set up to the sites local gateways. Most of the sites are OK, however 2 sites have complained of poor call quality, i.e. silence and cut outs for all calls whether across the WAN or through the PSTN. I am using G729 across the WAN but G711 to the PSTN. All set ups are identical. Does anyone have any ideas?
Nick, thanks for the prompt reply. I do not have QoS on the WAN as I have been running a number of sites as a trial with no QoS with no issues. I do not understand how QoS will help on the break out calls to the local PSTN that do not traverse the WAN.
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