I'm trying to configure the push to talk feature built in to the Nortel 6140 wireless phone handset, but can't seem to make it work with our WLC 4400.
This is from the Nortel documentation:
"he WLAN Handset 2211 and WLAN Handset 6140 join the IP multicast
stream through Internet Group Management Protocol (IGMP) v1 reports.
Each handset continues to send IGMP reports as long as PTT is enabled,
so the IP multicast state is maintained in the network, even when there is no
active use of the PTT feature. The multicast address used to support PTT is
220.127.116.11, and the port is 5001".
I've tried to configure the WLC as described (enable multicast with address 18.104.22.168), but still it's no go.
Anyone got any experience with this?