1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 - TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU-!).4%.!.#% ).4%2.!4)/.!,G0G04%,%0(/.%G0G0#)2#5)43/2!.):!4)/.G0G0/ shall be the point to undertake discussions and agree on a course of action to be taken on public telephonenetwork circuits regarding data tr
2、ansmission difficulties. It should be noted that agreement may bereached to take no actions regarding the international circuits; shall initiate any actions related to national network extensions in accordance with its national practicesand procedures.2.2 Fault investigations undertaken should be on
3、 the basis of the transmission requirements of public telephonecalls. Such investigations, while possibly initiated by a DCP, will be carried out by the maintenance organization(Recommendation M.710) according to standards defined by Recommendation M.580, etc.2.3 Transmission tests (fault location o
4、r scheduled routine measurements) between subscriber locations, that is, onan end-to-end basis, are not expected to be made. Considering routing complexities and the low probability ofduplicating an exact connection, such end-to-end tests would not necessarily be meaningful and would be very difficu
5、ltto coordinate. However, if end-to-end tests are deemed to be essential by an Administration, then such tests shall beimplemented in accordance with agreements reached by the respective DCPs.2.4 Routine maintenance measurements will be accomplished according to agreements reached in conformity withRecommendation M.605._1)The term “point” is used in the same sense as in the M.700 series of Recommendation see particularly Recommendations M.710.
