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Troubleshooting Guide for Cisco Unified MeetingPlace Express Release 1.2
OL-11303-01
Chapter 3 Common Telephone Issues in Cisco Unified MeetingPlace Express
Unable to Call Out
c. Click Audio Parameters.
Step 4 In the Default G.711 packet size (milliseconds) field, enter 10.
A smaller packet size reduces the damaging effect of a lost packet. However, network traffic increases
slightly.
Step 5 Set the Voice activity detect field to yes.
This reduces outgoing packets to callers. The Cisco Unified MeetingPlace Express system only
transmits packets if someone is actively speaking during a meeting. However, there might be a slight
delay when someone starts speaking causing part of their initial syllable to not be heard.
Step 6 Determine how to configure the phones in your organization to use Voice Activity Detect (VAD). This
way, the phones only send packets to the Cisco Unified MeetingPlace Express system when the phone
detects sound on your handset or headset.
Step 7 Set the Maximum jitter buffer (milliseconds) field to 250.
This is the maximum value allowed. This higher value introduces more delays into conversations, but
also reduces packet loss due to sudden surges in traffic.
Step 8 To maximize bandwidth, have the network administrator check that the your
Cisco Unified MeetingPlace Express system and the local switch that your system connects to are both
running in 100 Mbps full duplex mode.
Unable to Call Out
If users are unable to make calls out of the system, do the following:
• Ensure that the H.323 ID field is not blank. To check this, go to the H.323 Call Configuration page
of the Administration Center.
If an individual user is unable to make calls out of the system, do the following:
• If the user is a profiled user, go to the Edit User Profiles page and ensure that the Can call out of
meetings field is set to Yes.
• If the user is a guest user, do both of the following:
–
Go to the Usage Configuration page and ensure that the Allow guest outdials field is set to Yes.
–
Go to the Edit User Profiles page and ensure that the Can call out of meetings field is set to
Yes for the user profile called guest.