Hi Treg world I believe that Mexico uses the European E1,E2,E3 SDH structure for high bandwidth links. I also believe that coding is A-law and ISDN type is ETSI.
Many S American countries are like this due to former European involvement, in fact the Spanish company Telefonica and Scandinavians Ericsson have a large presence in these countries. If you know someone that can speak Spanish, The "Cofetel" (Federal Telecommunications Commission) web site may provide more detailed data or offer some specs / data. Try www.cft.gob.mx. Regards: Bill Ellingford. Approval Manager Motion Media Technology, ISDN Video products.
