Page History

...

In the WebUI, click the Diagnostics tab.
In the left navigation pane, click Teams Direct Routing > Connectivity Check.
Image Modified
Specify the values for each field for the service for which you need to verify port readiness. For SIP/TLS (TCP), the primary and secondary server IP addresses are hard-coded (not editable).
Table of Contents
maxLevel 4
minLevel 4
Click Apply. Service connectivity is checked and the Connectivity Check results display.

For example, after connectivity is checked for DNS (TCP), the message: "DNS TCP check on <ip address>: Port (<ip address:port number>) is open" displays in the Connectivity Check Results. A second result using the same format displays the results for the Secondary Server specified. For more information, refer to Working with Connectivity Check - Verifying Service and Port Requirements for CCE and Teams.
Repeat Steps 3 and 4 for each service that requires verification of port readiness.

...

Div

class	pdf6pttext

Connectivity Check Results

Service and Protocol	Port	CCE	Teams Direct Routing	Description	Connectivity Check Results
Inbound
SIP/MTLS (TCP)	5061

Image Removed

		Handles signaling for voice communications
STUN (TCP)	443

Image Removed

		STUN/TURN negotiation of candidates
STUN (UDP)	3478

Image Removed

		Determines the version of the Edge Server with which the Skype server is communicating
SIP/TLS (TCP)	5061

Image Removed

		Handles signaling for voice communications; primary and secondary server IP addresses are hard-coded.
RTP (UDP)	16384 - 17584

Image Removed

		Handles media for voice communications
Outbound
DNS (UDP/TCP)	53

Image Removed

	For the service that resolves the Public FQDN for the Microsoft Signaling Server, the Connectivity Check populates a default destination from the Host Name and Domain Name attributes in Host Information (that is, Web UI's Settings > System > Node-Level Settings). The tool opens the UDP socket and sends a homemade DNS packet.	If the remote server responds with a DNS response packet the port is reported as open. Otherwise, the port is reported as closed.
NTP (UDP)	123

Image Removed

		Service to support timestamps in certificate usage
HTTP (TCP)	80

Image Removed

Certificate revocation check and Certificate Revocation
List (CRL) retrieval

The host field is filled by default with the FQDN found in the SBC certificate, under the attribute: CRL Distribution Point.

RTP (UDP)

49152-65535

Image Removed

		Handles media for voice communications
SIP/TLS (TCP)	5061

Image Removed

Handles signaling for voice communications; primary and secondary server IP addresses are hard-coded.

For Teams Direct Routing, the SIP target can be the Microsoft SIP signaling server; Connectivity Check routes to: sip.pstnhub.microsoft.com, sip2.pstnhub.microsoft.com, sip3.pstnhub.microsoft.com.

STUN (TCP)

443

Image Removed

		For the service handling STUN/TURN negotiation of candidates, the Connectivity Check opens a UDP socket and sends a homemade STUN packet.	If the remote server does not respond with a STUN error packet, the port is reported as closed. The remote peer is the Microsoft Cloud Edge Server and the STUN protocol determines the Public IP address.
STUN (UDP)	3748

Image Removed

		For the STUN service that determines the version of the Edge Server with which the Skype server is communicating, Connectivity Check populates a default destination from from the Host Name and Domain Name attributes in Host Information (that is, Web UI's Settings > System > Node-Level Settings). The tool opens the UDP socket and sends a homemade DNS packet.	If the remote server responds with a DNS response packet the port is reported as open. Otherwise the port is reported as closed.
SIP/MTLS (TCP)	5061

Image Removed

Service to resolve Microsoft Signaling Server Public FQDN

For CCE, the Connectivity Check routes to sip.YourSbcDomain

Space shortcuts