Dear Mike, According to PROY-NOM-018-SCT1-1993 and PROY-NOM-019-SCT1-1993 they use A-law. An E1 interface standard draft was just issued(PROY stands for Draft or Planned or Proposed) PROY-NOM-152-SCT1-1999. This last standards deals with such issues as CRC-4, connectors and impedance. The former standards, that is PROY-NOM-018-SCTI-1993 and PROY-NOM-SCT1-1993 deal with 2048 megabit protocol/coding issues and analog coding issues respectively. Both have very long titles. If you are interested in how to locate these standards let me know and I will send you the details. I have translated the first 2 standards and have not yet started on the last one. However for the translations I would have to charge.
Regards G. Rae Dulmage, B. Comm., President TelApprove Services Corporation (613) 257 3015 Mike Miele wrote: > Folks, > > Can anyone advise if Mexico uses A-law or u-law companding? Telmex is the > provider in question to be specific. Also if it is u-Law, do you know if > it is the same as the US u-law? > > Thanks, Mike > mmi...@cisco.com
