Cisco Cisco 1900 2900 3900 Series 8-Port Gigabit Ethernet HS-WIC with PoE
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Antenna Guide for ISR and CGR with Verizon Wireless 4G LTE
7. A single antenna is connected, and that antenna connected to the M1/DIV port instead of the M0/MAIN
port. An LTE connection will usually not be made. Both antennas should be installed.
8. A single antenna is connected to M0/MAIN port (no antenna connected to M1/DIV port). This will affect
downlink performance. Both antennas should be installed.
9. The antennas are not securely tightened. The antennas may not remain vertical (the appropriate position for
a dipole) or the loose connection will yield intermittent or lower signal quality all connectors should be tight.
10. Both antennas are directly connected to the ISR. This may reduce LTE performance of the ISR. At least one
antenna should be connected via an extension cable (supplied) and antennas separated by 18 inches.
11. Antennas not positioned for optimal reception. Antennas should be placed outside any metal or thick walled
(concrete, brick, etc.) enclosure, preferably either close to a window or on a higher floor (e.g. not in a
basement). The appropriate antenna installation guide should be reviewed and followed (see next item).
12. The Cisco antenna was not installed as recommended. Please see the following installation guides:
www.cisco.com/c/en/us/td/docs/routers/access/interfaces/ic/hardware/installation/guide/EHWIC-4G-LTEHW.html
www.cisco.com/c/en/us/td/docs/routers/connectedgrid/antennas/installing/cg_antenna_install_guide/Overview.html
www.cisco.com/c/en/us/td/docs/routers/access/interfaces/NIM/hardware/installation/guide/4GLTENIM_HIG.html
13. Antennas used are not 4G-compatible or are non-Cisco. It is possible to obtain reception with 3G antennas or
non-Cisco 3G/4G antennas, but the signal strength and/or quality may not be sufficient for a high performing
4G environment. Additionally, 3G and non-Cisco antennas are not supported by Cisco for 4G deployment.
14. The signal strength or quality is insufficient. Please see the next section.
15. Everything seems correct, and still cannot get an LTE connection, or the LTE performance is unacceptable.
Gather the following and open a Cisco TAC services request.
o
Brief summary of the design or test setup, List of the issues. The following ISR console output:
o
term len 0
,
sh flash
,
sh ver
,
sh run
,
sh ip int brief
,
sh ip route
,
sh line
,
sh dialer
o
sh int cell 0/x/0
,
sh cell 0/x/0 all
,
sh cell 0/x/0 rad hist all
(find x from "sh ip int brief" or just 0 for 819)
o
debug chat
,
debug dialer
, (wait a few minutes),
undebug all
o
sh log
,
sh controller cell 0/x/0
(find x from "sh ip int brief" or just 0 for 819),
term len 24