Method for redirecting a call to at least one message deposit server

A device for redirecting a call in a telecommunication network to at least one message deposit server chosen beforehand, when a call being set up is being transferred from a first terminal to a second terminal, the transfer being carried out by means of a first signaling message containing a value representative of a number of transfers of the call, referred to as a “forwarding field”, the device comprising:

• a counter suitable for avoiding forwarding of the call to a first message deposit server by assigning a first value greater than or equal to a threshold to the forwarding field of the first signaling message, regardless a current value of the forwarding field, the threshold corresponding to a value starting from which the transfer of a call is not allowed by the network;
• a communication module suitable for transmitting the first signaling message to the second terminal;
• upon receiving a message indicating a failure to set up the call with the second terminal in response to the first signaling message, the counter and the communication module being operated in order to:
• assign a second value less than the threshold to a forwarding field of a second signaling message;
• and
• transmitting the second signaling message to the at least one chosen message deposit server.

A terminal including a redirection device for redirecting a call in a telecommunication network to at least one message deposit server chosen beforehand, when a call being set up is being transferred from a first terminal to a second terminal, the transfer being carried out by means of a first signaling message containing a value representative of a number of transfers of the call, referred to as a “forwarding field”, the device being characterized in that it includes:

• a counter suitable for avoiding forwarding of the call to a first message deposit server by assigning a first value greater than or equal to a threshold to the forwarding field of the first signaling message, regardless a current value of the forwarding field, the threshold corresponding to a value starting from which the transfer of a call is not allowed by the network;
• a communication module suitable for transmitting the first signaling message to the second terminal;
• upon receiving a message indicating a failure to set up the call with the second terminal in response to the first signaling message, the counter and the communication module being operated in order to:
• assign a second value less than the threshold to a forwarding field of a second signaling message;
• and
• transmitting the second signaling message to the at least one chosen message deposit server.

A server including a redirection device for redirecting a call in a telecommunication network to at least one message deposit server chosen beforehand, when a call being set up is being transferred from a first terminal to a second terminal, the transfer being carried out by means of a first signaling message containing a value representative of a number of transfers of the call, referred to as a “forwarding field”, the device being characterized in that it includes:

• a counter suitable for avoiding forwarding of the call to a first message deposit server by assigning a first value greater than or equal to a threshold to the forwarding field of the first signaling message, regardless a current value of the forwarding field, the threshold corresponding to a value starting from which the transfer of a call is not allowed by the network;
• a communication module suitable for transmitting the first signaling message to the second terminal;
• upon receiving a message indicating a failure to set up the call with the second terminal in response to the first signaling message, the counter and the communication module being operated in order to:
• assign a second value less than the threshold to a forwarding field of a second signaling message;
• and
• transmitting the second signaling message to the at least one chosen message deposit server.

A non-transitory computer-readable recording readable by a computer on which there is recorded a computer program comprising instructions for executing a method for redirecting a call in a telecommunication network to at least one message deposit server chosen beforehand, when a call being set up is being transferred from a first terminal to a second terminal, the transfer being carried out by means of a first signaling message containing a value representative of a number of transfers of the call, referred to as a “forwarding field”, the method being characterized in that it includes the following steps:

• avoiding forwarding of the call to a first message deposit server by assigning to the forwarding field of the first signaling message a first value greater than or equal to a threshold, regardless a current value of the forwarding field, the threshold corresponding to a value starting from which the transfer of a call is not allowed by the network;
• transmitting the first signaling message to the second terminal;
• upon receiving a message indicating a failure to set up the call with the second terminal in response to the first signaling message:
• assigning to a forwarding field of a second signaling message a second value less than the threshold;
• and
• transmitting the second signaling message to the at least one chosen message deposit server.