Cisco Expressway IP Port Usage Configuration Guide (Includes X14.3 and X15.0 releases)

IM and Presence Federation with Microsoft Clients

IM and Presence Service Federation with Microsoft Connections

Table 1. IM and Presence Service Federation with Microsoft Infrastructure
Purpose	Src. IP	Src. ports	Protocol	Dest. IP	Dst. Ports
Expressway-E listens for inbound Microsoft SIP IM&P	Any (Microsoft infrastructure for federated domain)	1024-65535	TLS	Expressway-E public	5061
Expressway-C listens for inbound Microsoft SIP IM&P	Expressway-E private	25000-29999	TLS	Expressway-C	5061
IM and Presence Service listens for inbound Microsoft SIP IM&P	Expressway-C	25000-29999	TLS	IM and Presence Service publisher	5061
Expressway-C listens for outbound Microsoft SIP IM&P	IM and Presence Service publisher	1024-65535	TLS	Expressway-C	5061
Expressway-E listens for outbound Microsoft SIP IM&P	Expressway-C	25000-29999	TLS	Expressway-E private	7001 (for first traversal zone; 7002 for second etc.)
Microsoft infrastructure listens for inbound Microsoft SIP IM&P	Expressway-E	25000-29999	TLS	Any (Microsoft infrastructure for federated domain)	5061