Where Union providers of mobile telephony services find the benefits of interoperability and end-to-end connectivity for their customers jeopardised by the termination, or threat of termination, of their roaming arrangements with mobile network operators in other Member States, or are unable to provide their customers with service in another Member State as a result of a lack of agreement with at least one wholesale network provider, national regulatory authorities should make use, where necessary, of the powers under Article 5 of the Access Directive to ensure adequate access and interconnection in order to guarantee such end-to-end con ...[+++]nectivity and the interoperability of services, taking into account the objectives of Article 8 of the Framework Directive, in particular the creation of a fully functioning internal market for electronic communications services.

(66) Where Union providers of mobile telephony services find the benefits of interoperability and end-to-end connectivity for their customers jeopardised by the termination, or threat of termination, of their roaming arrangements with mobile network operators in other Member States, or are unable to provide their customers with service in another Member State as a result of a lack of agreement with at least one wholesale network provider, national regulatory authorities should make use, where necessary, of the powers under Article 5 of the Access Directive to ensure adequate access and interconnection in order to guarantee such end-to-en ...[+++]d connectivity and the interoperability of services, taking into account the objectives of Article 8 of the Framework Directive, in particular the creation of a fully functioning internal market for electronic communications services.

i.e. the public communications network and/or publicly available telephone services supports the use of DTMF tones as defined in ETSI ETR 207 for end-to-end signalling throughout the network both within a Member State and between Member States.

(29) In order to ensure end-to-end connectivity and interoperability for roaming customers of regulated roaming SMS services, national regulatory authorities should intervene in a timely manner in accordance with the provisions of Article 5 of Directive 2002/19/EC of the European Parliament and of the Council of 7 March 2002 on access to, and interconnection of, electronic communications networks and associated facilities (Access Directive)and on a coordinated basis, as well as in accordance with the provisions of Article 8(1) of Regulation (EC) No 717/2007 and Article 21 of Directive 2002/21/EC of the European Parliament and of the Council of 7 March 2002 on a common regulatory framework for electronic communications networks and services ...[+++](Framework Directive), where a terrestrial mobile network operator established in one Member State complains to its national regulatory authority that its subscribers are unable to send or receive regulated roaming SMS to or from subscribers of a terrestrial mobile network located in another Member State as a result of a failure of the two operators concerned to conclude an agreement.

i. e. the public communications network supports the use of DTMF tones as defined in ETSI ETR 207 for end-to-end signalling throughout the network both within a Member State and between Member States.

Where Community providers of mobile telephony services find the benefits of interoperability and end-to-end connectivity for their customers jeopardised by the termination, or threat of termination, of their roaming arrangements with mobile network operators in other Member States, or are unable to provide their customers with service in another Member State as a result of a lack of agreement with at least one wholesale network provider, national regulatory authorities should make use, where necessary, of the powers under Article 5 of the Access Directive to ensure adequate access and interconnection in order to guarantee such end-to-end ...[+++] connectivity and the interoperability of services, taking into account the objectives of Article 8 of the Framework Directive, in particular the creation of a fully functioning single market for electronic communications services.