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Administrator Guide for Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1
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Chapter 4 Troubleshooting Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1
Troubleshooting Caller Connectivity
Dead Air Heard When Using an H.323 Device
Possible Cause
—Data packets transmitted across IP are at times inconsistently sized.
Corrective Action
—Ensure that Cisco Unified CallManager, the IP-gateway server, and the
Cisco Unified MeetingPlace Audio Server system are all be set to handle the same size data packet.
Dead Air Heard When Using a Cisco IP Phone
Possible Cause
—There may be a poor connection between the Cisco IP phone and the Cisco Unified
MeetingPlace Audio Server system.
Corrective Action
—Verify that all associated connections are secure.
Fast Busy Signal Heard When Using a Cisco IP Phone
Possible Cause
—The route pattern to IP-gateway server may not be configured properly in
Cisco Unified CallManager.
.
Corrective Action
—To resolve a fast busy-signal problem, verify that the configuration information
that you entered in the
“Assigning a Cisco Unified CallManager Route Pattern to Point to the
Cisco Unified MeetingPlace H.323/SIP IP Gateway Release Release 5.2.1 Server” section on page 2-4
is correct.
To verify the configuration, perform the following steps:
Step 1
In the Cisco Unified CallManager Administration page, choose
Route Plan
> Route Pattern
.
Step 2
Verify that the settings are correct and make changes if necessary.
Step 3
When finished, click
Insert
.
Possible Cause
—All IP ports on the Cisco Unified MeetingPlace Audio Server system are in use.
Corrective Action
—Confirm that Cisco Unified CallManager and the voice gateway have been
configured to handle IP call overflow.
Unable to Make Dial-Pad Key Selections When Using an H.323 Device
Possible Cause
—The audio compression setting of the H.323 device may be incorrect.
Corrective Action—
Use CCITT u-Law, 8.000 kHz, 8 Bit Mono
for a Cisco Unified MeetingPlace
Audio Server system with T1; use CCITT A-Law, 8.000 kHz, 8 Bit Mono for a Cisco Unified
MeetingPlace Audio Server system with E1.
