Aastra OpenCom 130 User Guide - Page 170
Loop Detection, Loop Detection
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Telephony Call Forwarding warding user in a chain displayed. The "Via" call number is, however, only displayed when the call number display is activated for the forwarding user. Note: When call forwarding to the OpenVoice voicebox programme, the "Via" call number is evaluated in order to determine the owner of a voicebox. The last call forwarding user is used no matter what the user group setting. When call forwarding using the secretarial function of the voicebox programme, the call number of the voicebox owner is also shown as the "Via" call number. 13.2.2 Loop Detection Loops can generally occur during a call forwarding chain, e. g. when the call forwarding destination refers back to the call forwarding source. This is why a forwarded call has a call forwarding history. When the next call forwarding destination is already included in the call forwarding history, a loop is detected and any further call forwarding is prevented. If no parallel call signalling takes place, e. g. by the Indicate call forwarding after time parallel setting in the user group, the call is cleared when there is a loop. X 242 242 284 242 284 264 Loop Detection A loop is also detected during call diversion. When you wish to divert an incoming call to a destination call number which is already part of the call forwarding chain, the display shows NEG. and call signalling is continued. Note: The call forwarding history cannot be transmitted via Q.SIG connections. Chain detection is also deactivated when forwarding via the voice portal programme OpenAttendant. 168