Call setup time increased after activating CSFB PS Handover Feature

[_Rashad_]

Dear Experts,
We face an issue related Call setup time. Before in our 4G network CSFB was performing by Redirection. We activated CSFB PS Handover feature in one cluster for trial.
After feature activated call setup time increased fom 6 s. to 9 s.
I analysed the logs and everything looks normal except UE perform more measurements. In CSFB redirection was performing 1 or 2 times 'UE Capability Enquiry' but in PS Handover it happened 4-5 times.
Note: 4G network vendor N// but 3G network vendor E//
Please support us.
Thanks in advance.

[phuc]

Can you upload feature description, log celltrace and list parameters you set ?

[dennielone]

Can you upload feature description, log celltrace and list parameters you set ?
Agree, also if had Qualcomm UE log, I can help to take a look.

[_Rashad_]

Hello Dear Experts,
i am sorry for late reply.
Our team just optimize 4G side (N//). that is why i could not analyse 3G (E//) side. We informed our customer about it. When they checked they detected that the problem in their 3G side.