Dtmf Relay Using Sip Notify (Nonstandard) - Cisco CP-7911G-CH1 System Administrator Manual

How to Configure DTMF Relay for SIP Applications and Voice Mail
Command or Action
Step 5
notify telephone-event max-duration time
Example:
Router(config-sip-ua)# notify telephone-event
max-duration 2000
Step 6
exit
Example:
Router(config-sip-ua)# exit
Troubleshooting Tips
The dial-peer section of the show running-config command output displays DTMF relay status when it
is configured, as shown in this excerpt:
dial-peer voice 123 voip
destination-pattern [12]...
monitor probe icmp-ping
session protocol sipv2
session target ipv4:10.8.17.42
dtmf-relay rtp-nte

DTMF Relay Using SIP Notify (Nonstandard)

To use voice mail on a SIP network that connects to a Cisco Unity Express system, use a nonstandard
SIP Notify format. To configure the Notify format, use the sip-notify keyword with the dtmf-relay
command. Using the sip-notify keyword may be required for backward compatibility with Cisco SRST
Versions 3.0 and 3.1.
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
Cisco Unified SCCP and SIP SRST System Administrator Guide
254
dial-peer voice tag voip
dtmf-relay sip-notify
exit
sip-ua
notify telephone-event max-duration time
exit
Integrating Voice Mail with Cisco Unified SRST
Purpose
Configures the maximum time interval allowed
between two consecutive NOTIFY messages for a
single DTMF event.
max-duration time: Time interval between
•
consecutive NOTIFY messages for a single
DTMF event, in milliseconds. Range is from
500 to 3000. Default is 2000.
Exits SIP user-agent configuration mode.
OL-13143-04