GENERATING A COMFORT INDICATOR AT AN ORIGINATING TERMINAL
A call request is sent to establish a telephony session over an Internet Protocol (IP) network between an originating terminal and a destination device. A message responsive to the call request is received from a node connected to the IP network. In response to receiving the message, local generation of a comfort indicator at the 5 originating terminal is performed.
1 . A communication device comprising:
a user interface; and
at least one controller configured:
to send a request to establish a communication session over an Internet Protocol (IP) network between the communication device and a destination device;
to receive a response to the request from a node of the IP network; and
in response to receiving the message, before indicating alerting at the destination device and before completing establishment of a communication path over the IP network to the destination device, to provide a comfort indication to a user via the user interface.
2 . The communication device of claim 1 , wherein the comfort indication comprises an audible indication.
3 . The communication device of claim 1 , wherein the comfort indication comprises a visual indication.
4 . The communication device of claim 1 , wherein the request to establish a communication session comprises a Session Initiation Protocol (SIP) message.
5 . The communication device of claim 1 , wherein the response to the request comprises a Session Initiation Protocol (SIP) message.
6 . The communication device of claim 5 , wherein the response to the request comprises a SIP Trying message.
7 . The communication device of claim 5 , wherein the response to the request comprises a SIP Progress message.
8 . The communication device of claim 1 , wherein the response to the request is a modified SIP message comprising at least one field that is not defined by SIP.
9 . The communication device of claim 1 , wherein the controller is further configured:
to receive a message indicating that alerting is being performed at the destination device; and
to provide an alerting indication to the user via the user interface in response to the message.
10 . The communication device of claim 9 , wherein the controller is configured to provide the comfort indication to the user via the user interface in a time interval between sending of the request to establish the communication session and providing of the alerting indication to the user via the user interface.
11 . A non-transitory storage medium carrying instructions for execution by a controller of a communication device having a user interface, the instructions comprising instructions executable by the controller:
to send a request to establish a communication session over an Internet Protocol (IP) network between the communication device and a destination device;
to receive a response to the request from a node of the IP network; and
in response to receiving the message, before indicating alerting at the destination device and before completing establishment of a communication path over the IP network to the destination device, to provide a comfort indication to a user via the user interface.
12 . The medium of claim 11 , wherein the comfort indication comprises an audible indication.
13 . The medium of claim 11 , wherein the comfort indication comprises a visual indication.
14 . The medium of claim 11 , wherein the request to establish a communication session comprises a Session Initiation Protocol (SIP) message.
15 . The medium of claim 11 , wherein the response to the request comprises a Session Initiation Protocol (SIP) message.
16 . The medium of claim 15 , wherein the response to the request comprises a SIP Trying message.
17 . The medium of claim 15 , wherein the response to the request comprises a SIP Progress message.
18 . The medium of claim 11 , wherein the response to the request is a modified SIP message comprising at least one field that is not defined by SIP.
19 . The medium of claim 1 , wherein the instructions further comprise instructions executable by the controller:
to receive a message indicating that alerting is being performed at the destination device; and
to provide an alerting indication to the user via the user interface in response to the message.
20 . The medium of claim 19 , wherein the instructions further comprise instructions executable by the controller to provide the comfort indication to the user via the user interface in a time interval between sending of the request to establish the communication session and providing of the alerting indication to the user via the user interface.