No Ringtone on Cisco IP Phone

[Harish Vernekar]

                   When PSTN user calls Cisco IP phone user, no ring tone is heard on Cisco IP Phone

[Aaron Harrison]

Hi

You haven't specified whether you are using CUCM, CME, H323, MGCP or anything else that might help diagnose your issue...

However, it's most common to get this issue on H.323 based systems. Take a look at this document: http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a0080094c33.shtml#ringback_pstn

Aaron