The OrienTel Tunisia MSA (Modern Standard Arabic) database comprises 598 Tunisian speakers (359 males, 239 females) recorded over the Tunisian fixed and mobile telephone network. This database is partitioned into 1 CD and 1 DVD. The speech databases made within the OrienTel project were validated by SPEX, the Netherlands, to assess their compliance with the OrienTel format and content specifications. Speech samples are stored as sequences of 8-bit 8 kHz A-law. Each prompted utterance is stored in a separate file. Each signal file is accompanied by an ASCII SAM label file which contains the relevant descriptive information. Each speaker uttered the following items: • 1 isolated single digit • 2 sequences of 5 isolated digits • 7+1 connected digits : 1 prompt sheet number (6 digits), 6 strings of 4 digits in written format, +1 prompt sheet number in digits • 2 currency money amounts • 2 natural numbers • 3 dates : 1 prompted date, 1 relative or general date expression, 1 prompted date phrase (Islamic calendar) • 1 time phrase • 2 spelled words : string of 4 letter sequences • 3 directory assistance utterances : 1 frequent city name, 1 frequent company name, 1 personal name ( first name and family name) • 2 yes/no questions : 1 predominantly ”yes” question, 1 predominantly ”no” question • 6 application keywords/keyphrases • 1 word spotting phrase using embedded application words • 4 phonetically rich words • 9 phonetically rich sentences • 4+1 spontaneous items (for control) The following age distribution has been obtained: 2 speakers are below 16, 441 speakers are between 16 and 30, 101 speakers are between 31 and 45, 54 speakers are between 46 and 60. A pronunciation lexicon with a phonemic transcription in SAMPA is also included.