Cisco Expressway Series, Configuration Manual

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Expressway with Microsoft Infrastructure Port Reference
Notes about the deployment connections and ports
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Trunk connections between Microsoft infrastructure elements not shown.
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Media/signaling connections required for Microsoft client to client calls not shown.
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Microsoft port ranges may vary from those shown here; check the Microsoft documentation to determine the
port ranges defined for your infrastructure.
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Cisco Unified Communications Manager and collaboration endpoint connections not shown (for clarity). You
can see an example of those on
MRA Connections, page 26 .
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Multiple media paths are possible because there are two TURN servers in the DMZ. "Any" source IP address is
listed because ICE negotiation could mean the media path uses a relay address provided by one of the
TURN servers, or a reflexive address from the egress side of a firewall/NAT.
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The Microsoft Interoperability service on the gateway Expressway has a shared pool of media ports (default
56000-57000). The service can use any port in the range for media connection on either TCP or
UDP transport.
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The drawing shows two IP addresses on the Expressway-E because you may have one or two NICs enabled
on the Expressway-E. The address you enter for the TURN server (on the Microsoft interoperability
configuration of the gateway Expressway) is the one that should listen on 3478 (TCP and UDP).
Purpose Src. IP Src. ports Protocol Dest. IP Dst.
Ports
SIP signaling to Lync
environment Gateway
Expressway 25000-29999 TLS Lync FE Server 5061
SIP signaling from Lync
environment Lync
FE Server Ephemeral ports
(1024-65535) TLS Gateway Expressway:
MS interop B2BUA 65072
SIP signaling Microsoft
client 5061 MTLS Microsoft Edge 5061
SIP signaling Microsoft
Edge 5061 MTLS Microsoft client 5061
SIP/TLS & TCP TURN Microsoft
client 443 TLS Microsoft Edge 443
SIP/TLS & TCP TURN Microsoft
Edge 443 TLS Microsoft client 443
STUN Microsoft
client 3478 UDP Microsoft Edge 3478
STUN Microsoft
Edge 3478 UDP Microsoft client 3478
Table 18 SIP Signaling Port Reference
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Cisco Expressway IP Port Usage Configuration Guide