Connection Establishment Delay
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6.3.2 Connection establishment delay
6.3.2.1 Connection establishment delay is defined as: Value of elapsed time between the connection establishment request and the indication of successful connection establishment. 6.3.2.2 In case of mobile originated calls, the delay is defined between the request by command ATD and indication by the later of the two events response CONNECT or transition of DCD to ON. 6.3.2.3 The connection establishment delay of mobile originated calls shall be <8.5s (95%), ≤10s (100%). 6.3.2.4 Delays >10s shall be evaluated as connection establishment errors.
In [TSG] there is a comparison between GERAN call setup using SIP and ordinary GSM call setup. For a typical GSM call setup, the time is about 3.6 seconds, and for the case when using SIP, the call setup is approximately 7.9 seconds.
6.3.2.1 Connection establishment delay is defined as: Value of elapsed time between the connection establishment request and the indication of successful connection establishment. 6.3.2.2 In case of mobile originated calls, the delay is defined between the request by command ATD and indication by the later of the two events response CONNECT or transition of DCD to ON. 6.3.2.3 The connection establishment delay of mobile originated calls shall be <8.5s (95%), ≤10s (100%). 6.3.2.4 Delays >10s shall be evaluated as connection establishment errors.
In [TSG] there is a comparison between GERAN call setup using SIP and ordinary GSM call setup. For a typical GSM call setup, the time is about 3.6 seconds, and for the case when using SIP, the call setup is approximately 7.9 seconds.
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