Cisco Expressway Series Configuration Manual - Page 36
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Cisco Expressway IP Port Usage Configuration Guide
Expressway with Microsoft Infrastructure Port Reference
Notes about the deployment connections and ports
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
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port ranges defined for your infrastructure.
Cisco Unified Communications Manager and collaboration endpoint connections not shown (for clarity). You
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can see an example of those on
Multiple media paths are possible because there are two TURN servers in the DMZ. "Any" source IP address is
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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.
The Microsoft Interoperability service on the gateway Expressway has a shared pool of media ports (default
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56000-57000). The service can use any port in the range for media connection on either TCP or
UDP transport.
The drawing shows two IP addresses on the Expressway-E because you may have one or two NICs enabled
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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).
Table 18 SIP Signaling Port Reference
Purpose
SIP signaling to Lync
environment
SIP signaling from Lync
environment
SIP signaling
SIP signaling
SIP/TLS & TCP TURN
SIP/TLS & TCP TURN
STUN
STUN
MRA Connections, page
Src. IP
Src. ports
Gateway
25000-29999
Expressway
Lync
Ephemeral ports
FE Server
(1024-65535)
Microsoft
5061
client
Microsoft
5061
Edge
Microsoft
443
client
Microsoft
443
Edge
Microsoft
3478
client
Microsoft
3478
Edge
36
26.
Protocol Dest. IP
TLS
Lync FE Server
TLS
Gateway Expressway:
MS interop B2BUA
MTLS
Microsoft Edge
MTLS
Microsoft client
TLS
Microsoft Edge
TLS
Microsoft client
UDP
Microsoft Edge
UDP
Microsoft client
Dst.
Ports
5061
65072
5061
5061
443
443
3478
3478