System information

1. CONFIGURATION OVER WEB BROWSER

Continued from previous page

Item Description

Switch to SIM card on the other

module when sig. strength drops

below "weak" level (and is above

"fair" level on target conﬁg.) and

switch to default SIM card when

sig. strength is above "fair" level

This parameter enables switching to speciﬁed SIM

card or APN, when the signal strength drops below

speciﬁed value (and is above speciﬁed value on target

conﬁguration). If the signal strength is above speciﬁed

value, this parameter enables switching back to de-

fault SIM card.

Switch to default SIM card after

timeout

This parameter deﬁnes the method, how the router will

try to switch back to default SIM card or default APN.

Table 23: Switch between SIM card conﬁgurations

Switching between SIM cards on the ground of signal strength is performed according to

the "weak" (lower limit) and "fair" (upper limit) values. It is possible to deﬁne the following

properties:

Item Description

Levels for GPRS/EDGE Limits for GRPS/EDGE technology

Levels for UMTS/HSPA+ Limits for UMTS/HSPA+ technology

Levels for CDMA Limits for CDMA technology

Sampling Interval The frequency of making samples

Filter Width Filter width for calculating the moving average from

loaded values of signal strength. The ﬁrst value indi-

cates the fewest number of loaded samples for which

the value of calculated average is valid and can be

used to evaluate the relevant condition. The second

value is a ﬁlter width in the steady state when the mov-

ing average algorithm is applied (ie. if another sample

is loaded, replaces the oldest one, which means that

the ﬁlter width remains constant).

Table 24: Properties deﬁning switching between SIM cards

The following parameters deﬁne the time after which the router attempts to go back to the

default SIM card or APN.

Item Description

Initial timeout The ﬁrst attempt to switch back to the primary SIM card or APN

shall be made for the time deﬁned in the parameter Initial Time-

out, range of this parameter is from 1 to 10000 minutes.

Continued on next page