Good day, I have an ISR router with call manager express, in which are recorded SPA504G and SPA502 phones with SIP protocol, when I press the hold button on models SPA504G the person who called the extension of the phone SPA504G not listening to music on hold, it does not give any more sound.
When that is done in a SPA502 phone, the caller to be put on retention hear 2 beeps.
A SPA504G phones they release to the 7.5.5 update.
Most curious is that we sip phone registered, non-cisco and these phones when holding call either internal or external, the file that is specific to the function in telephone-service moh, if playing
I can help make the moh function can be done with the phone SPA5xx
Best Regards
