Kotilingala ancient site of pre-Satavahana

Archaeological evidence indicates that Kotilingala (karimnagar) in Andhra Pradesh was the ancient site of pre-Satavahana and early Satavahana kings.The Satavahana was a Brahmin dynasty first mentioned in the Aitareya Brahmana, dating back to the 8th century BCE mentioning them to be of Vishwamitra’s lineage. In the Pūrānas and on their coins the dynasty is variously referred to as the Sātavāhanas, Sātakarnīs, Andhras and Andhrabhrityas.[citation needed] A reference to the Sātavāhanas by the Greek traveller Megasthenes indicates that they possessed 100,000 infantry, 1,000 elephants, and had more than 30 well built fortified towns:

Next come the Andarae, a still more powerful race, which possesses numerous villages, and thirty towns defended by walls and towers, and which supplies its king with an army of 100,000 infantry, 2,000 cavalry, and 1,000 elephants.
—Plin. Hist. Nat. VI. 21. 8-23. 11., quoting Megasthenes


http://telanganacharitra.blogspot.com/2010/02/archaeological-evidence-show-capital-in.html

Telugu Pre Satavahana

Satavahanas established relationships with Naga, Yaksha, and Dravida tribes of Vindhya mountains who already were living there then. Telugu, Tamil, and Kannada are Dravidian languages.the first settlement of Tenugu  people.

Teli river in Jataka tales

Bhuddhist Jataka tales were written during 200-250 BC.Give details of  Tel river is a subriver of Mahanadi in Orissa. This confirms that one of the Andhra tribes migrated this way also. The people in this tribe are Kalingas (ka’Limgulu). The books cited above describe the Andhras and Kalingas as two different branches of a single tribe. Sometimes these two words (Andhras and Kalingas) are used 

Andhra Telugu ef in Mahabharata

 Kalingas along with ANDHRAS WERE supporting the Kauravas during the battle Mahabharata. Sahadeva defeated the kingdoms of Pandya, Dravida, Odhra, Kerala, Andhra, and Kalinga while performing the Rajasooya yajna. This is depicted in the Mahabharatam. Chanoora (ca’NooruDu) was killed by Srikrishna in Madhura. Harivamsapuranam corroborates the fact that Chanoora was the king of Karoosa Desa (karooSa dESam) (on the North side of Vindhya and on the North banks of Yamuna river) and was an Anhdra (Andhrudu) too. 

Ancient Andhra tribe

Andhra is one of the ancient tribes of India. One can encounter several tales about Andhras in epics like Mahabharatam and Ramayanam, in great puranas, and Budhdhist Jataka Tales. This confirms the ancient nature of Andhra society.