Cisco Expressway Series Configuration Manual page 37

Cisco Expressway IP Port Usage Configuration Guide
Table 19 Media Path Port Reference
Purpose
AV media to on-prem Lync clients
Screen sharing from on-prem Lync
clients
Media from Microsoft interoperability
B2BUA towards on-premises Cisco
collaboration recipients
ICE negotiation and TURN requests
from Gateway Expressway to
Expressway-E TURN server
UDP TURN media relays
TCP TURN media relays
VCS Only
Presence to Lync FE Server
VCS Only
B2BUA communication with an
external transcoder (eg. Cisco AMGW)
Src. IP Src. Protocol Dest. IP
ports
Gateway 56000- UDP
Expressway 57000
443
Lync client TCP
Gateway 56000- UDP
Expressway 57000
Gateway 56000- UDP or
Expressway 57000 TCP
Expressway- 24000- UDP
E 29999
TURN server
Expressway- 24000- TCP
E 29999
TURN server
Gateway 10011 TLS
Expressway
Gateway 65080 TLS
Expressway
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Dst. Ports
Lync clients Lync client
media ports
Gateway 56000-57000
Expressway
Deployment Endpoint media
dependent; bridge, ports
endpoint, or a
SIP proxy
UDP 3478
Expressway-E
TURN server
TCP 3478
(3478-3483 on
large systems)
Any (reflexive or 50000-59999
relay) from (Edge range) or
MS client or Edge client media
ports
Any (reflexive or 50000-59999
relay) from (Edge range) or
MS client or Edge client media
ports
Lync FE Server 5061
External transcoder 5061