I'm using CCME on 2821 router with 7960,7940 and 7911 IP phones. My problem is the next: when users (only who use 7911 IP phone) try to make transfer call to another IP phones they cannot here the rings of other phones. So they only can suppose that caller accept call and put the hang up. In the attach is part of config file. Any idea?
It looks like because you are using Transfer System Full-Consult that the 7911 would need to be setup with a Dual Line config;
A dual-line ephone-dn has one virtual voice port and two channels to handle two independent calls. This capacity allows call waiting, call transfer, and conference functions within a single ephone-dn. Dual-line mode is supported on all phone types, but is not appropriate for voice-mail numbers, intercoms, or ephone-dns used for message-waiting indicators, paging, loopback, or hunt groups. Overlays of single-line hunt groups onto dual-line buttons are supported.
Ephone-dns are created in single-line mode if the dual-line keyword is not used. Changing an ephone-dn from dual-line mode to single-line mode (and vice versa) requires that you delete the ephone-dn and then recreate it.
The following example enters ephone-dn configuration mode to create the ephone-dn 5576:
Router(config)# ephone-dn 1
Router(config-ephone-dn)# number 5576
The following example creates an ephone-dn with the number 1001 in dual-line mode. The no huntstop command allows calls to continue to hunt to other ephone-dns if this one is busy or does not answer. The huntstop channel command disables call hunting to the second channel of this ephone-dn if the first channel is busy or does not answer.
Router(config)# ephone-dn 10 dual-line
Router(config-ephone-dn)# number 1001
Router(config-ephone-dn)# no huntstop
Router(config-ephone-dn)# huntstop channel
From this good CME doc;
Hope this helps!