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UMTS/HSPA Module Series

UC20 Hardware Design

UC20_Hardware_Design Confidential / Released 51 / 82

As to GSM network, the paging period time can be calculated with the following formula.

T= 4.615ms × 51 × DRX

As to WCDMA network, the paging period time can be calculated with the following formula.

T= 10ms × 2

DRX

DRX (Discontinuous Reception) is a value from 2 to 9 in GSM network, resulting in paging intervals

470.6ms to 2118.42ms, and a value from 6 to 9 in WCDMA network, resulting in paging intervals from

640ms to 5120ms.

3.17. Behavior of the RI

You can use command AT+QCFG=“risignaltype”, “physical” to configure RI behavior:

No matter which port URC is presented on, URC will trigger the behavior on RI pin.

URC can be output from UART port, USB AT port and USB modem port by command AT+QURCCFG.

The default port is USB AT port.

In additional, RI behavior can be configured flexible. The default behavior of the RI is shown as below.

Table 21: Behavior of the RI

State

Response

Idle

RI keeps high level.

URC

RI outputs 120ms low pulse when new URC returns.

The RI behavior can be changed by command AT+QCFG=“urc/ri/ring”, refer to document [1] for

details.

NOTE

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