Port Range Protocol Destination Functionality
Result of Blocking
Port
Required
3478, 3479 STUN
(UDP)
STUN Server Enables endpoints to
automatically discover the
presence of a firewall or
NAT, and to determine
their public IP address.
Cannot
automatically
discover the
presence of a
firewall or NAT
(only manual
configuration
available)
Optional
5060 SIP (TCP) Avaya IP Office
and any SIP-
enabled video
network device
Enables SIP call signaling Cannot connect
SIP calls over TCP
Mandatory
5060 SIP (UDP) Avaya IP Office
and any SIP-
enabled video
network device
Enables SIP call signaling Cannot connect
SIP calls over UDP
Mandatory
5070 BFCP (TCP) Avaya IP Office
and any SIP-
enabled video
network device
Enables SIP video content
(presentation) signaling
No SIP video
content available
Mandatory
55003 AT
Commands
(TCP)
An external
controlling device
Enables you to remotely
manage the XT Server via
API
Cannot send/
receive commands
Optional
55099 Software
Upgrade
(TCP)
XT Server
Software Upgrade
application
Enables software upgrade Cannot upgrade
software
Recommended
60123 Telnet (TCP) Telnet server Enables remote
management via Telnet
No Telnet access Optional
Table 7: Outbound Ports to Open from the Scopia XT Server for IP Office
Port Range Protocol Destination Functionality
Result of Blocking
Port
Required
162 SNMP (UDP) An SNMP
manager station
Enables discovering
the system IP address
via SNMP
You cannot discover the
system IP address via
SNMP
Optional
1718 H.225.0/ RAS
(UDP)
Multicast IP
address
224.0.1.41 (all
gatekeepers)
Enables H.323
endpoints to
automatically identify
the gatekeeper to
register with
H.323 endpoints can
only register with a
predefined gatekeeper
Optional
(recommended
if using a
gatekeeper)
3339, 3340 XML HINTS
(TCP)
Scopia Control,
Scopia XT
Desktop Server
Enables receiving
system status alerts
Cannot send system
status alerts; Scopia
Control and Scopia XT
Desktop Server cannot
function.
Optional
Installation Guide for Scopia XT5000 Server for IP Office Version 3.2 Planning the Topology of the Scopia XT Server for IP Office
Deployment | 20