silent call

1. 1
Silent Call and PS Slow Start
• Prepared By N2 Regional Team

2. 2
Overview
Product Problem Summary Status Remark
NSN 3G
RNC205上網及
語音品質問題.
Open
1. RNC205上網起始速度較慢, 約2秒後才會開始拉升,
NSN追查原因中.
2. RNC205 發生以前靜音等語音品質不良問題.

3. 3
Silent Call

4. 4
• TST was informed that subscriber complain poor cs call voice quality and
silent call at node B under RNC 205.
CASE SUMMARY
<Change information classification in footer>

5. 5
• Verify on field test to reproduce the problem by drive test
- Site 13107 S3, Site 13011 S1, Site 13176 S1
• Review NBR relationship
- Site 13176 S1, Site 13378 S3
• Recommend to have join test between Nokia and TST team to reproduce the
exact complain.
• Could TST provide the phone brand and software version that subscriber
used.
ACTION PLAN
<Change information classification in footer>

6. 6
• Case 1
- 桃園市桃園區健行路47號
- Site 13107 S3 RSCP=-75
- Voice call quality are good and no silent call observed.
Silent Call
Location test time
voice call
successful rate
PS DATA
successful rate
桃園市桃園區健行路47號
Stationary : 2/26
16:44~17:15 100% 100%
Site 13107 S3
Handover : 2/26
17:16~17:27 100% 100%

7. 7
• Case 2
- 桃園市桃園區守法路18巷10-3號4樓
- Site 13259 S1與13011 S1 RSCP=-75 ~-80(會跟據位置穩定互換兩個訊號來源)
- Voice call quality are good and no silent call observed.
Silent Call
Location test time
voice call
successful rate
PS DATA
successful rate
桃園市桃園區守法路
18巷10-3號4樓
Stationary : 2/26
13:46~14:20 100% 100%
Site 13011 S1
Handover : 2/26
15:17~15:33 100% 100%

8. 8
• Case 3
- 桃園市桃園區民有十二街45號11樓
- 13176 S1 RSCP=-78
- Add NBR
- Voice call quality are good and no silent call observed.
Silent Call
Location test time
voice call
successful rate
PS DATA
successful rate
桃園市桃園區民有十二街
45號11樓
Stationary : 2/26
15:55~16:25 100% 100%
Site 13176 S1
Handover : 2/26
16:27~16:38 100% 100%
Source WCEL Name Target WCEL Name
13176A 13189A
13176D 13189D

9. 9
• Case 4
- 桃園縣桃園市國豐六街25號
- Site 13378 S3
- Add NBR
Silent Call
Source WCEL Name Target WCEL Name
13378A 13123B
13378D 13123E

10. 10
Thanks!