Cisco CP-7911G-CH1 System Administrator Manual page 303

Appendix B: Integrating Cisco Unified Communications Manager and Cisco Unified SRST to Use Cisco Unified SRST
Command or Action
Step 3
debug h245 asn
Example:
Router# debug h245 asn
*Mar 1 04:20:19.227: H245 MSC INCOMING PDU ::=
value MultimediaSystemControlMessage ::= response :
openLogicalChannelAck :
{
forwardLogicalChannelNumber 6
forwardMultiplexAckParameters
h2250LogicalChannelAckParameters :
{
sessionID 1
mediaChannel unicastAddress : iPAddress :
{
network 'EF010101'H
tsapIdentifier 16384
}
mediaControlChannel unicastAddress : iPAddress :
{
network 'EF010101'H
tsapIdentifier 16385
}
}
}
Step 4
show call active voice
Example:
Router# show call active voice | include RemoteMedia
RemoteMediaIPAddress=239.1.1.1
RemoteMediaPort=16384
Troubleshooting Tips
•
OL-13143-04
If the PSTN caller hears tone on hold (TOH) instead of MOH, two problems are probable:
Cisco Unified CM has failed to activate MOH and has used TOH as a fallback. To verify that
–
this is the case, see the
section on page 296.
Cisco Unified CM does not have the appropriate MOH resource available. Use the show
–
ccm-manager music-on-hold command to find out if the MOH resource is the problem.
How to Use Cisco Unified SRST Gateways as a Multicast MOH Resource
Purpose
Use this command if H.323 is being used and no
multicast address appears in the show
ccm-manager music-on-hold command output
to verify the H.323 handshaking between Cisco
Unified Communications Manager and the
Cisco Unified SRST gateway. When a PSTN
caller is placed on hold, Cisco Unified
Communications Manager sends an H.245
closeLogicalChannel, followed by an
openLogicalChannel. Verify that the final
openLogicalChannelAck from Cisco Unified
Communications Manager to the Cisco Unified
SRST gateway contains the expected multicast
IP address and port number. In the following
example, the IP address is EF010101 (239.1.1.1)
and the port number is 16384.
Use this command with the debug h245 asn
command to further verify the H.323
handshaking between Cisco Unified
Communications Manager and the Cisco
Unified SRST gateway.
The IP address and port number displayed must
match the IP address and port number displayed
by the debug h245 asn command. If the
RemoteMediaIPAddress field displays 0.0.0.0,
you probably have encountered caveat
CSCdz00697. For more information, see the
Cisco
Using Cisco Unified SRST Gateways as a
Multicast MOH Resource" section on page
"Verifying Cisco Unified Communications Manager Multicast MOH"
Cisco Unified SCCP and SIP SRST System Administrator Guide
Bug ToolKit and the "Restrictions for
282.
303