Mexico Dial Plan Change

Problem Description

Mexico’s IFT (Federal Communications Institute) has announced a new standardized dialing plan that will simplify Mexico’s current dial plan. The new dial plan will implement 10-digit uniform dialing country wide and will go into effect August 3, 2019.

The new dial plan includes the elimination of several well-known calling prefixes. The prefixes to be removed include:

  • 01 – used as a prefix for dialing to landlines nationwide.
  • 044 – used to dial from landlines to mobile national numbers
  • 045 – used for national long-distance calls
  • 1 – international callers will no longer need to dial the extra 1 that was required when dialing cellphone numbers

The new dial plan will also include a migration of emergency services numbers to a single emergency number 911. The emergency numbers that will be consolidated are listed below:

  • 060 Local police
  • 061 State judicial police
  • 065 Red Cross
  • 066 National Citizen's Emergency Response System
  • 068 Firemen
  • 080 Safety and emergency

Note: These numbers have already migrated to emergency number 911 as of 2016.

Latest version of the Instituto Federal de Telecomunicaciones (IFT) published changes can be accessed via the following URLs:

Problem Symptom

Users are unable to complete calls via LAN or mobile lines. Caller receives a busy tone signal.

Workaround/Solution

Reconfigure the dial plan and or dial peer on the platform(s) that route to the PSTN. This must be done in order to comply with the new 10-digit dialing plan.

This new plan consists of a combination of the Long-Distance code + Local Number. For example, in order to call a cellphone or landline located in Mexico City you will need to dial as seen below:

Mexico City long distance code (55) + Local number (1234 5678) = 55 1234 5678

For CUCDM CUSTOMERS ONLY

Cisco recommends CUCDM customers update their dial plan workflow in order to resolve this issue.  Please update the necessary workflow using the Mexico-CUCDM_CountryDialPlanMex-V7-T3 schema file.

Schema File Download URL:

https://ciscoshare.cisco.com/alfext/ui/#/library/06e8bee7-2218-4fea-8504-46585dc8efad

SCHEMA FILE IMPORTANT NOTE:

If you are unable to access the schema file using the provided URL, please contact hcbu-a2q@external.cisco.com and request file access.

Please refer to the Instituto Federal de Telecomunicaciones (IFT) via the following URLs in order to view the latest published changes:

The following products are affected by this issue: