HP MSR SERIES Configuration Manual page 598

6. Select RFC2833 for DTMF Transmission Mode.
7. Click Apply.
# Enable the feature service.
8. Select Voice Management > Local Number from the navigation tree, and click the
number 3000 to access the call services page as shown in
Figure 605 Enabling the feature service
9. Select Enable for Feature Service.
10. Click Apply.
Verifying the configuration
After the above configuration, dial feature code *425*1000# at Telephone C, and you can monitor the
conversation between Telephone A and Telephone C. If you want to participate in the conversation, dial
*428# at Telephone C.
Figure
581
icon of local
605.