Switzerland Transit Visa... Indian National.. 11 hrs stop over... Portugal Work Visa

Switzerland Transit Visa... Indian National.. 11 hrs stop over... Portugal Work Visa...?
I am an Indian National. I have valid work visa of Portugal (It is not a Schengen Visa). Going back to India (Mumbai) from Portugal (Lisbon) via Switzerland (Zurich) with 11 hrs stop over at night. Do i need a Transit visa for Switzerland? Can I go out of the airport and spend night at Hotel in Zurich?
Portugal - 1 Answers
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Since April 2010 a long-stay national visa (Type D) issued for one Schengen country enables the stay in other Schengen countries for up to 90 days. You can stop over at Zürich and leave the airport without any formalities. The flight from Portugal to Switzerland is a Schengen internal flight without governmental immigration control. Also the following documents issued by Portugal authorize to visit Switzerland: • Título de Residência — (Residence Permit) • Autorização de Residência Temporária — (Temporary Residence Authorisation) • Autorizaçåo de Residência Permanente — (Permanent Residence Authorisation) • Autorização de Residência Vitalícia — (Residence Authorisation valid for life) • Cartão de Identidade de Refugiado — (Refugee Identity Card) • Autorização de Residência por razões humanitárias — (Residence Authorisation on humanitarian grounds) • Cartão de Residência de nacional de um Estado-membro da Comunidade Europeia — (Residence Permit of a national of an EC Member State) • Cartão de Residência Temporária — (Temporary Residence Permit) • Cartão de Residência — (Residence Permit) • Autorização de Permanência — (Permit of Stay) http://www.bfm.admin.ch/bfm/en/home/themen/einreise/merkblatt_einreise.html ..[see list 3a] People may ask "why do I need a certain document", the borders between Schengen countries are open and nobody controls it anyhow. Well, the airline companies have been obliged only to transport passengers which are properly documented and they will be subject to hefty fines should a random immigration inspection reveal that passengers have been transported which do not hold the required documents. http://www.timaticweb.com/cgi-bin/tim_website_client.cgi?SpecData=1&VISA=&HEALTH=&page=both&NA=IN&AR=PT&TR=CH&DE=IN&VT=PT&EM=PT&PASSTYPES=PASS&user=SKYWEB&subuser=SKYWEB1 ..