Installation Instructions

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COMPANY CONFIDENTIAL CENG0336_XE_nanoBTS_Installation_and_Test_Manual.doc
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6.5.5.9 Change IP Configuration
The Change IP Configuration button pops up the dialog box shown in Figure 43
which displa
ys the nanoBTS’ current IP address and allows the user to change the IP
address, subnet mask and default gateway.
Figure 43 - Change IP Configuration dialog box
The nanoBTS may be optionally restarted after setting these attributes; the nanoBTS
will not use the new values of these attributes until it is restarted, and if you don’t
restart it at this stage BTS Installer will probably try to contact it in future using the new
IP address and will probably fail.
This is one of two methods of changing the IP configuration provided by BTS Installer,
and is the method to use if you are not using BTS Installer’s built-in DHCP server to
provide this information to the nanoBTS.
NOTE: User has to enter values for all the three new parameters (i.e. New IP Address,
New Subnet Mask and New Default Gateway). If any one value missed to enter then
default value (0.0.0.0) will be configured which may lead incorrect IP configuration to
BTS.
6.5.5.10 Frequency Control
[See the ip.access document, “nanoBTS Synchronisation Feature Definition”, for a
description of how the GSM frequency accuracy requirements are met in the
nanoGSM™ system.]
The Frequency Control button allows the user to make manual adjustments to the
nanoBTS’ clock frequency, via the Frequency Control attribute, which is represented
as a number of ppb (parts per billion) from a nominal value.
2,3
It also allows the user
to view the Timing Bus status, which is of interest in the case of multi-TRX capable
nanoBTSs.
4
2
It is generally easier to adjust a nanoBTS’s clock frequency using the Network Listen Frequency
Synchronisation Test (see section 6.8.7) or - for multi-TRX capable nanoBTS models - an accurate 10
MHz clock source. See [CENG0336] for details.
3
Note that in a multi-TRX BTS (available in SR2.0 onwards), only the master unit can be adjusted by this
means; slaves automatically adjust their clocks to the master.
4
You can use BTS Installer to determine whether a nanoBTS is multi-TRX capable or not using the Fetch
HW & SW Configuration button: if the nanoBTS is not multi-TRX capable, the Equipment Version will be
108_029 or 110_029; all other values of Equipment Version are multi-TRX capable.