During testing (PVMV100R017C02SPC500) the standalone function it was found the switching time is 5 minutes. At the same time for V100R017C02B109 switching time is 4 seconds.
In our case oversea parameter 87 was set to 0, that is only
heartbeat detection mechanism was used which caused long switching time;
To solve the problem in PVMV100R017C02SPC500 we need set the oversea parameter 87 as 1.
In V100R017C02B109 UA5000 has two types of H248 interface status detection mechanism:
- heartbeat detection
- event reliability detection;
For heartbeat detection mechanism, if there is no reply for heartbeat packet for several times, MG interface will be reset;
For event reliability detection, when event has no reply, after timeout system will reset MG interface. Using these mechanisms V100R017C02B109 can switch to standalone mode quickly (4 seconds).
For PVMV100R017C02SPC500, there is optimization, when oversea parameter 87 set as 1, event reliability detection mode will be enabled, in default it will not be enabled