Sim2 M80 Dokumentacja Pobierz pdf (Strona 66)

M80 Hardware Design

M80_HD_V1.0 - 66 -

RI

Idle Ring

Data calling

establish. On-hook

by “ATH”. SMS

received

HIGH

LOW

Figure 39: RI behavior of data calling as a receiver

RI

Idle Calling

On-hook

Talking

HIGH

LOW

Idle

Figure 40: RI behavior as a caller

RI

Idle or

talking

URC or

SMS Received

HIGH

LOW

120ms

Figure 41: RI behavior of URC or SMS received

Quectel

Confidential

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Quectel Cellular Engine 1
Confidential 10

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