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Antenna Guide for ISR and CGR with Verizon Wireless 4G LTE
LTE GPS Frequently Asked Questions
Q) I installed the Web browser location app, but it did not generate the location.html file. Why?
A) The findmyrouter.tcl script creates or updates location.html at the top of each hour. When first installed and
configured, it will wait until the top of the next hour to create the location.html file. The tcl file can be edited to execute
more frequently by changing the first line. For example to execute every minute, edit the portion
configured, it will wait until the top of the next hour to create the location.html file. The tcl file can be edited to execute
more frequently by changing the first line. For example to execute every minute, edit the portion
cron_entry "0 * * * *"
to
cron_entry "* * * * *"
Q) When will GPS be supported on ISRs with LTE?
A) Official support will coincide with ISR GPS antenna general availability, December 2013
Q) How do I order the GPS antenna?
A) Via CCW on cisco.com as a spare part (GPS-ACT-ANTM-SMA=)
Q) Does Cisco sell a combination LTE/GPS antenna?
A) Not currently, but may in the future. One consideration is that the best placement for the LTE antenna may not be
where the GPS antennas has direct line of sight to the sky
where the GPS antennas has direct line of sight to the sky
Q) Can non-Cisco LTE/GPS antennas be used with the ISR G2 and CGR 2010 devices?
A) The antenna may physically connect and function, but it is not support by Cisco TAC.
Q) What are standalone GPS and assisted GPS?
A) Assisted GPS is where the coordinates are calculated more quickly and potentially more accurately by two-way
communications with a service providing GPS coordinate processing. Standalone GPS is where the GPS device
calculates its location/coordinates itself (based on the multiple received satellite information).
communications with a service providing GPS coordinate processing. Standalone GPS is where the GPS device
calculates its location/coordinates itself (based on the multiple received satellite information).
Q) What is active GPS?
A) Active GPS is where GPS signal is amplified and/or processed to provide a cleaner more powerful signal. This is
done within the device itself, so still a standalone GPS function.
done within the device itself, so still a standalone GPS function.
Q) Is the ISR LTE GPS antenna providing standalone GPS or assisted GPS?
A) The ISR GPS antenna supports active GPS, which is standalone GPS along with amplifying the received signal;
location is calculated by the ISR itself, based on the coordinates from multiple satellites.
location is calculated by the ISR itself, based on the coordinates from multiple satellites.
Q) Can the ISR LTE GPS function be used with Verizon Mobile Private Network (MPN)?
A) Yes, the active GPS function is internal to the ISR, and the results can be accessed or provided from the ISR via a
network with IP reachability. MPN provided IP reachability as if the ISR were directly attached to a private network.
network with IP reachability. MPN provided IP reachability as if the ISR were directly attached to a private network.