Ordinance on Telecommunications Services (OTS)
Previously before Art. 27.
English is not an official language of the Swiss Confederation. This translation is provided for information purposes only and has no legal force.
Art. 26a Transmission of numbers
1 Providers of the public telephony service which generate connections must ensure that at least one number in conformity with the Swiss E.164 numbering plan is transmitted as the telephone number of the calling line. 2 They must transmit the number that is allocated to the customer for the service within the framework of which the connection is established. The other telecommunications service providers involved in the connection shall not modify transmitted numbers. 3 Providers of the public telephony service may enable their customers to transmit other numbers when the connection is established, provided they can demonstrate a right of use. If providers are aware that customers are transmitting numbers for which they do not have a right of use, they must take appropriate measures to prevent the transmission of these numbers. 3bis If customers provide prima facie evidence that unauthorised third parties are using their numbers, the providers of a public telephony service may with the
Art. 26a — Inserted by No I of the O of 4 Nov. 2009, in force since 1 Jan. 2010 (AS 2009 5821). Para. 3bis — Inserted by No I of the O of 5 Nov. 2014, in force since 1 Jan. 2015 (AS 2014 4161). Para. 6 — Inserted by No I of the O of 18 Nov. 2020, in force since 1 July 2021 (AS 2020 6183).
Art. 27 Access to the emergency call services
1 Access to the emergency call services under Article 28 of the Ordinance of 6 October 1997 on Addressing Resources in the Telecommunications Sector (TSRO) must be guaranteed from every telephone connection and must be free of charge. A flat-rate charge of 20 cents per call may be imposed for telephone assistance for adults. 2 Providers of services of the universal service by satellite mobile communications to which the International Telecommunication Union has allocated addressing resources need only guarantee free-of-charge access to the European emergency number 112.
Art. 27 — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183). Para. 1 — SR 784.104
Art. 28 Routing of emergency calls
Providers of the public telephony service must assure the routing of emergency calls to the emergency services specified in Article 28 TSRO.
Art. 28 — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183). SR 784.104
Art. 29 Location of emergency calls
1 As far as the chosen technology permits, on-line caller location must be guaranteed for calls to the emergency services specified in Article 28 TSRO. This must also be guaranteed for customers who have chosen not to be entered in a public directory. 2 Device-specific location functions may be activated during an emergency call even without the express consent of the customer. Insofar as the selected technology permits, they must be deactivated again after the emergency call has ended. 3 On request, OFCOM may designate other numbers exclusively for emergency services of the police, fire brigade, ambulance and rescue services for which caller location must be possible. OFCOM shall publish a list of these numbers.
Art. 29 — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183). Para. 1 — SR 784.104
Art. 29a Location of emergency calls: Obligations of mobile telephony licensees
1 In the case of emergency calls to the European emergency number from suitably equipped vehicles (eCall112), mobile telephony licensees must extract the minimum set of data (MSD) from the voice channel and make it available for the location service. 2 In the case of emergency calls using the device and operating system-specific location function and voice channel-independent transmission of location information (Advanced Mobile Location, AML), they must make the location information available for the location service.
Art. 29a — Inserted by No I of the O of 18 Nov. 2020, in force since 1 July 2022 (AS 2020 6183; 2021 724).
Art. 29b Location of emergency calls: Operating a caller location service
1 The universal service licensee, in co-operation with the other public telephony service providers and for the benefit of the alarm centres, shall operate a caller location service. This service must also be accessible for alarm centres that are not connected to the universal service licensee. 2 The co-operation between the universal service licensee and the other public telephony service providers and the use of the caller location service by the alarm centres is based on the cost-oriented principles indicated in Article 54. 3 The providers of the public telephony service shall bear the investment and operating costs for providing caller location. 4 The recurring costs of providing the service shall be settled among the public telephony service providers at wholesale level based on the number of emergency calls to be expected annually. 5 The alarm centres shall bear only the costs of using the caller location service.
Art. 29b — Inserted by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021, except for para. 4, in force since 1 Jan. 2022 (AS 2020 6183; 2021 724).
Art. 30 Special provisions concerning emergency calls
1 If, in the case of voice transmission over internet protocol, correct routing and caller identification of emergency calls is not technically possible for every location, they must be guaranteed only for calls from the main location cited in the subscription contract. 2 Public telephony service providers must ensure that customers are informed of this limitation and have explicitly confirmed that they are aware of it. They shall inform the customers that whenever possible a means of communication should be used with which correct routing and caller identification of emergency calls is technically possible. 2 If the chosen technology so permits, in extraordinary situations emergency calls must not be interrupted by priority treatment of civil telecommunications traffic by customers who have important duties to perform in such situations. 3 Emergency calls must not be interrupted by prioritised telecommunications services for security communication (Art. 90 para. 2).
Art. 30 — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183).
Art. 31 Modalities of directory data provision
1 Public telephony service providers are obliged to provide those entitled in accordance with Article 21 paragraph 2 TCA both online access to the minimum data from directory entries pertaining to their customers and the transmission of data en bloc, with the option of at least daily updates. 2 The providers that have the access to the directory data under Article 11 paragraphs 1 and 2 may modify the directory data if a customer so requests and they notify the public telephony service provider concerned of the modifications. 3 The providers that have access to the directory data under Article 11 paragraph 3 may process this data only in order to provide a service for establishing communication. They may not publish the data, use them for advertising purposes or disclose them to third parties.
Art. 31 — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183).
Art. 32 Interoperability
1 Public telephony service providers must guarantee the communication capability of this service (Art. 21a para. 1 TCA). They must guarantee interconnection directly or indirectly. It shall comply with the provisions concerning: a. transparency of the basic offering (Art. 53 paras. 1, 2 and 4); b. publication of the technical and commercial conditions in respect of the providers requesting interconnection (Art. 61); c. interfaces (Art. 55). 2 The procedure in the event of disputes concerning interoperability is based, mutatis mutandis, on Articles 70–74. 3 ComCom shall decide on the conditions of interconnection according to the principles which are customary in the market and in the sector.
Para. 1 — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183). Para. 1 let. c — Amended by No I of the O of 18 Nov. 2020, in force since 1 Jan. 2021 (AS 2020 6183).
Art. 33 Services for the hearing or visually impaired or persons with limited mobility
1 The services for the hearing or visually impaired and persons with limited mobility must be free of charge, regardless of whether they are provided by providers of services of the universal service themselves or via access to third-party services. 2 The connection charges charged to the hearing or visually impaired and persons with limited mobility within the framework of these services shall not be discriminatory in comparison with the standard tariffs.