1) Faça o login no System Console/DMGR

2) Clique em Servers > Server types > WebSphere proxy servers

3) Selecione o servidor HTTPSIPXXXXXProxyNN

4) Clique em Proxy Settings -> SIP Proxy Server Settings -> SIP proxy settings.

5) Em Additional Properties, clique em Custom Properties.

6) Clique em New

e crie conforme as custom properties

Nome	Valor	Descrição
contactRegistryEnabled	false
disableAllHostNameLookups	true
disableTraceHostNameLookup	true
enableMultiClusterRouting	true
forceRport	true
ipForwardingLBEnabled	true
tcp.IPSprayer.host	SipProxy=<IP_LOAD_BALANCER_SIP> Conf=<IP_LOAD_BALANCER_CONFMGR>	Cluster address/virtual address This is the virtual address configured on the Load Balancer for that cluster.
tcp.IPSprayer.port	5060	SIP port for TCP that is configured on the Load Balancer for that cluster.
tls.IPSprayer.host	SipProxy=<IP_LOAD_BALANCER_SIP> Conf=<IP_LOAD_BALANCER_CONFMGR>	See tcp.IPSprayer.host
tls.IPSprayer.port	5061	SIP port for UDP that is configured on the Load Balancer for that cluster. TCP and UDP ports must be the same.
udp.IPSprayer.host	SipProxy=<IP_LOAD_BALANCER_SIP> Conf=<IP_LOAD_BALANCER_CONFMGR>	See tcp.IPSprayer.host
udp.IPSprayer.port	5060	SIP port for TLS that is configured on the Load Balancer for that cluster.
useViaSentByForOutboundConnections	true

6) Clique em OK e depois Save

Continuar no artigo