Cisco Cisco TelePresence Video Communication Server Expressway
System checks
Zone status
Go to
Status > Zones
on both VCS Control and VCS Expressway to check that the traversal zone is Active.
You can also check the zone status via
Configuration > Zones > Zones
.
If the traversal zone is not active:
n
Review the traversal zone configuration.
n
Confirm that the relevant ports are enabled for outbound routing on the NAT and firewall devices located
between the VCS Control and VCS Expressway (see
between the VCS Control and VCS Expressway (see
).
n
Confirm that the username and password credentials are configured correctly (and match) on VCS Control
and VCS Expressway traversal zones and in the authentication database on the VCS Expressway.
and VCS Expressway traversal zones and in the authentication database on the VCS Expressway.
Registration status
Check that all endpoints which are expected to be registered are actually registered to the relevant VCS, and
that they are registering the expected aliases. All successfully registered endpoints are listed on
that they are registering the expected aliases. All successfully registered endpoints are listed on
Status >
Registrations > By device
.
If the expected endpoints are not registered:
n
Review the endpoint’s registration configuration: is it configured to register with the VCS Expressway if
located on the external network / internet, and to register with the VCS Control if located on the internal
network?
located on the external network / internet, and to register with the VCS Control if located on the internal
network?
n
Review the SIP domains (
).
n
Home endpoints may fail to register when using SRV records in some instances: if the endpoint is using the
home router for its DNS server (this also applies to the DNS server being used by a PC when Jabber Video is
running on it) and the DNS server software on the router does not support look up of SRV records.
home router for its DNS server (this also applies to the DNS server being used by a PC when Jabber Video is
running on it) and the DNS server software on the router does not support look up of SRV records.
In this case there are two alternatives:
n
Change the DNS server on the endpoint to use a publicly available DNS server (for example Google –
8.8.8.8) which can resolve SRV record lookups.
8.8.8.8) which can resolve SRV record lookups.
or
n
Change the SIP/H.323 server address on the endpoint to use the FQDN of one of the nodes in the VCS
cluster, rather than the SRV record of the cluster; the device will now perform an AAAA or A record lookup.
cluster, rather than the SRV record of the cluster; the device will now perform an AAAA or A record lookup.
Call signaling
If calls do not complete, despite the endpoints being successfully registered to a VCS:
n
Review the VCS Control search rule configuration.
n
Review the VCS Expressway search rule configuration.
n
Check the search history page for search attempts and failures (
Status > Search history
).
n
Check the Event Log for call connection failure reasons (
Status > Logs > Event Log
).
Cisco TelePresence Video Communication Server Basic Configuration (Control with Expressway) Deploy-
ment Guide (X8.2)
ment Guide (X8.2)
Page 33 of 65
System checks