FAQs from Rohde & Schwarz

LBSNR: NSA tests failing with SCG failure cause T310 expiry with some devices

Description

Problem : NSA tests failing with SCG failure cause T310 timer expired with some devices. t-reordering parameter was not configured in LBS NR 17.0 for NR Split bearer, which is causing some devices to take value of this parameter as infinite and causing this issue.

On further debugging we found that this issue is specific to limited chipset as the current mapped SRI version i.e. 6.3.4.13 that we use with LBS-NR 17.0 Release does not configure t-reordering parameter for NR split bearer.

Found in :LNS NG 17.0

Affected Test List : All NSA Tests.

Resolution

Make use of SRI 6.3.4.16 (Installer attached. Although, this should be already installed on your CMW as this comes as a dependency of LBS-NR 17.0 installer in IM).

Go to "C:\Program Files\Rohde-Schwarz\CMW\4.0\RS.sfa\Config" on CMW and open Signalling.ini file

and change SRI version against SRI_DIR_VERSION tag to 6.3.4.16

SRI_DIR_VERSION=6.3.4.16

Name
Type
Version
Date
Size
CMW-SRI_6.3.4.16.msi
Type
FAQ
Version
Date
05-Mar-2021
Size
21 MB