The CCITT recommends that, for crosstalk reasons, the absolute power level of each component of a short duration signal should not exceed the values given in Table 1/G.224.
ITU-T G.224 SPANISH-1993 Referenced Document
ITU-T Q.16 Maximum Permissible Value for the Absolute Power Level of a Signalling Pulse - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI; 1 pp; Cancelled; Same as
ITU-T G.224 SPANISH-1993 history
1993ITU-T G.224 SPANISH-1993 MAXIMUM PERMISSIBLE VALUE FOR THE ABSOLUTE POWER LEVEL (POWER REFERRED TO ONE MILLIWATT) OF A SIGNALLING PULSE