Multicast paging worked but no longer works

[CWR]

check the audio codec in use as the static ip vs dhcp ip should not matter. multicast is using a different address range - right? ie: 239.0.0.1:50001

Code:

################################################################################​#######
##                              Multicast                                            ##                                            
################################################################################​#######

#Configure the codec of multicast paging.
multicast.codec = PCMU

#Enbale or diable the phone to handle the incoming multicast paging calls when there is a multicast paging call on the phone; 0-Disabled, 1-Enabled (default);
#If enabled, the phone will answer the incoming multicast paging call with a higher priority and ignore that with a lower priority.
multicast.receive_priority.enable = 0

#Configure the priority of multicast paging calls. It ranges from 0 to 10.
multicast.receive_priority.priority = 0

#Configure the listening multicast IP address and port number for the phone. X ranges from 1 to 10.
#multicast.listen_address.X.ip_address =
multicast.listen_address.1.ip_address = 239.0.0.1:50001

#Configure the lable displayed on the LCD screen when receiving the multicast paging. X ranges from 1 to 10.
#multicast.listen_address.X.label =
multicast.listen_address.1.label = PAGE