Samsung SMG-3200 - Manual (Page 167)

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2. To maintain this setting during system booting, enter the CLI’s pstnmenu and
select item 15 '[15] Save & Exit,' and press [Enter].
SMG3200:165.213.81.230> pstnmenu
<<<<< PSTN Configuration Menu >>>>>
[0] Gateway Operation Mode
[1] PSTN Rerouting Insert Digit
[2] PCM Method
[3] Dial Method
[4] SLI Signal
[5] Trunk Signal
[6] Call Control Method
[7] Ring Cadence
[8] System Tone Cadence
[9] CO Tone Cadence
[10] Gain Control
[11] Diagnosis
[12] MMC Port Block/UnBlock
[13] Display Slot Configuration
[14] Display Port Status
[15] Save & Exit
[16] Exit
Select ? 15 Select item 15 'Save & Exit.'
Save & Exit
Good