INTERNATIONAL TELECOMMUNICATION UNION ITU-T RECOMMENDATION SUMMARY Rec. No. : E.723 Title : Grade-of-service parameters for signalling system No. 7 networks Study Group : II - Network Operation Version : New Date of adoption : 1992 Notes : Based on the reference connections for ISDN circuit switched services and the grade-of-service (GOS) parameter values contained in Recommendation E.721, Recommendation E.723 provides appropriate reference connections for the S.S. No. 7 network and identifies the signalling network GOS parameters and their target values. Further, Recommendation E.723 also provides guidelines for partitioning/allocating the signalling network end-to-end GOS to the basic components of the S.S. No. 7 network. The reference connection and GOS parameters and values for source transaction type services requiring data base lookup are also included. To order the complete text of this Recommendation, please use the Order Form for ITU-T Recommendations. An electronic version of this form is available on ITUDOC (Winword: UPI=ITU-5265; ASCII: UPI=ITU-2488).