OK.
I didn’t say that, but a) wrote something in the forum for the first time on the same day and then b) not so friendly just made demands (to the completely wrong person) and then c) didn’t understand what a “customer helping customer” means "Forum is. Understood.
Maybe someone else can help you and pass on the information directly…
- Solutionselected by Catwatch
@Catwatch wrote:
Dear Swisscom, can you still manage in this century that a local telephone call can be made on the SBB train route ZH -BE WITHOUT 5 interruptions? And please no mass processing! You have the money!!!!!! So finally do it!
The complaint is addressed to the wrong addressee.
On the Bern-Zurich HB railway line via the new Mattstetten-Rothrist line, Swisscom mobile phone reception is almost completely at a “top level” (RSCP > -70 dBm) in railway carriages with functioning in-train repeaters. Only at the level of the Limmattal marshalling yard and in the forest regions between Mellingen and Aarau did I briefly measure signal levels slightly below the “top level” (RSCP < -70 dBm). See also:
[https://community.swisscom.ch/t5/Archiv-Mobile/Samsung-Galaxy-S5-Bei-aktiviert-LTE-Empfang-bricht-der/m-p/347791] (https://community.swisscom.ch/t5/Archiv-Mobile/Samsung-Galaxy-S5-Bei-aktiviert-LTE-Empfang-bricht-der/m-p/347791)
Frequent connection interruptions during telephone calls in long-distance rail cars are primarily caused by defective in-train repeaters:
https://de.wikipedia.org/wiki/Intrain-Repeater
[https://www.sbb.ch/content/sbb/de/desktop/sbb-gruppe/medien/dossier-medienschaffende/unterwegs-verbunden/\_jcr\_content/contentPar/tabs/tabItems/backgroundinformati/tabPar/downloadlist/ downloadList/_p_mobilfunkservices.spooler.download.pd f](https://www.sbb.ch/content/sbb/de/desktop/sbb-gruppe/medien/dossier-medienschaffende/unterwegs-verbunden/_jcr_content/contentPar/tabs/tabItems/backgroundinformati/tabPar/downloadlist/downloadList /_p_mobilfunkservices.spooler.download.pdf)
[https://community.swisscom.ch/t5/Diskussionen-%C3%BCber-das/Zuverl%C3%A4ssig-besser-Empfang-nicht-Daten-in-Steinmaur/m-p/403636] (https://community.swisscom.ch/t5/Diskussionen-%C3%BCber-das/Zuverl%C3%A4ssig-besser-Empfang-nicht-Daten-in-Steinmaur/m-p/403636)
\=> If conversations are frequently interrupted, the train carriage should be changed.
Only at very high travel speeds > 160 km/h (e.g. new Mattstetten-Rothrist line) are calls interrupted for technical reasons, even with very good mobile phone reception. Tunnel entrances and exits on the new line in particular can lead to calls being interrupted for technical reasons due to the very high travel speed.
The mobile phone signal is broadcast shortly before, in and shortly after Swiss railway tunnels via the tunnel radio system:
https://de.wikipedia.org/wiki/Tunnelfunkanlage
[https://community.swisscom.ch/t5/Diskussionen-%C3%BCber-das/Zuverl%C3%A4ssig-besser-Empfang-nicht-Daten-in-Steinmaur/m-p/403636] (https://community.swisscom.ch/t5/Diskussionen-%C3%BCber-das/Zuverl%C3%A4ssig-besser-Empfang-nicht-Daten-in-Steinmaur/m-p/403636)
The tunnel radio system is operated by the railway infrastructure operator (e.g. SBB). The public mobile phone providers (e.g. Swisscom) supply the head station of the tunnel radio system with the mobile signal from the neighboring mobile phone antennas via fiber optic cables.
Tip: For telephone calls in train cars, operate your mobile phone in 3G/WCDMA/UMTS-only mode and switch off the mobile data connection (PS => packet switching). In pure UMTS/3G mode, the “soft handover” leads to more stable cell changes/cellular antenna changes during the telephone conversation. Only the pure UMTS/3G mode supports “soft handover”. See also:
https://de.wikipedia.org/wiki/Handover
[http://www.radio-electronics.com/info/cellulartelecomms/umts/umts-wcdma-handover-handoff.php](http://www.radio-electronics.com/info/cellulartelecomms/umts/umts- wcdma-handover-handoff.php)
http://www.3glteinfo.com/soft-handover-lte/
2G/GSM, 2G+/GPRS/EDGE, 4G/LTE, 4G+/LTE+ and all 3G extensions (3G+/H/H+/HSPA/HSPA+/HSDPA/HSUPA) only support “hard handover”.
Of course, this tip only applies to railway lines that are fully equipped with UMTS/3G-capable tunnel radio systems (e.g. Bern-Zurich). For example, the Gotthard mountain route (as of May 2016) is not equipped with UMTS/3G-capable tunnel radio systems.
@GrandDixense: Thanks for the constructive and factual input. I have made the settings accordingly and will pay attention to this on the next trip. For me the topic is closed so far. If necessary, can you tell me where the customer contact form can be found? My outburst is understood as human frustration. The fellow commuters on the train had similar feelings. The non-productive answers were the last straw and are at least equally unworthy of the community.