¶1Following a jury trial commenced on October 28, 1976, appellant was convicted of robbery,
¶2On appeal, appellant contends that the Commonwealth violated his rights to a speedy trial under Pa.R.Crim.P. 1100(a)(1)
¶3The facts important to our consideration of the issues are as follows. On April 20, 1974, appellant was arrested, and a complaint was filed charging him with simple assault
¶4On January 8, two hundred fifty-five (255) days
¶5On April 6,1976, the Commonwealth requested appellant’s return from the New York authorities, and appellant was returned on June 23, 1976. Appellant filed a petition to dismiss under Rule 1100(f), and a seven day continuance was granted by the court for disposition of appellant’s motion. The motion to dismiss was denied on August 3, and the new run date for trial under Rule 1100 was designated as November 29, 1976. After a hearing on appellant’s motion to suppress, trial was commenced on October 28, 1976, one hundred twenty-seven (127) days after appellant’s return from the New York authorities.
¶6Appellant first contends that his right to a speedy trial under Pa.R.Crim.P. 1100(a)(1) was violated in that his trial did not commence until after two hundred seventy (270) days from the date written complaints were filed against him. In connection with this contention, appellant asserts that the January 8, 1975 waiver of his rights under Rule 1100 was ineffective because he did not know he was waiving his Rule 1100 rights ad infinitum. We find the waiver to be effective, and thus the Rule 1100 issue is waived.
¶7The Commonwealth has the burden of establishing the validity of the Rule 1100 waiver. Commonwealth v. Myrick, 468 Pa. 155, 360 A.2d 598 (1976). In Myrick, our supreme court held that the formal requirements for valid waivers are intended to assure that the decision to waive these rights is the informed and voluntary act of the defendant and can be shown to be such by reference to the record. “So long as there is an indication, on the record, that the waiver is the informed and voluntary decision of the defendant, it will be accorded prima facie validity.” Myrick, supra,468 Pa. at 160, 360 A.2d at 600. It should be noted that in Myrick, not only was there an on-the-record colloquy, but also a statement signed by the defendant and endorsed upon the indictment indicating his willingness that the trial time *216be extended. See also, Commonwealth v. Brown, 248 Pa.Super. 134, 141, 374 A.2d 1354, 1358 (1977). “Thus the Commonwealth’s claim that appellant waived the protection of rule 1100 is formally valid, for either the colloquy or the signed statement would by themselves be sufficient record indication that the waiver was, prima facie, informed and voluntary.” Myrick, supra,468 Pa. at 161, 360 A.2d at 601.
¶8In the instant case, a colloquy was conducted at the lower court by appellant counsel. After adducing appellant’s educational background,
¶9Appellant next contends that his right to a speedy trial under the Interstate Agreement on Detainers was violated in that his trial did not commence until one hundred twenty-*217seven (127) days after his return to Pennsylvania, seven days beyond the statutory mandate. Although there is a question as to whether the lower court properly excluded a seven day continuance from its calculation of the one hundred twenty (120) day period, we need not consider this question since appellant failed to preserve the issue for appeal by making a pre-trial motion to dismiss under the Agreement on Detain-ers.
¶10Unlike Rule 1100, the Interstate Agreement on Detainers does not specify the time within which a motion to dismiss must be made in order to be timely. However, under Pa.R.Crim.P. 305,
¶11In the instant case, appellant made no pre-trial motion to dismiss under the Interstate Agreement oh Detainers, and therefore, consideration of this issue is not properly before this court.
¶12The judgment of sentence of the lower court is affirmed.
¶13. 18 Pa.C.S. § 3701.
¶14. 18 Pa.C.S. § 903.
¶15. 18 Pa.C.S. § 907(a).
¶16. 18 Pa.C.S. § 907(b).
¶17. 18 Pa.C.S. § 908(a).
¶18. 18 Pa.C.S. § 2702.
¶19. Pa.R.Crim.P. 1100(a)(1) provides that:
“Trial in a court case in which a written complaint is filed against the defendant after June 30, 1973 but before July 1, 1974 shall commence no later than two hundred seventy (270) days from the date on which the complaint is filed.”
¶20. Article IV(c) of the Interstate Agreement on Detainers provides that:
“In respect of any proceeding made possible by this article, trial shall be commenced within one hundred twenty days of the arrival of the prisoner in the receiving state, but for good cause shown in open court, the prisoner or his counsel being present, the court having jurisdiction of the matter may grant any necessary or reasonable continuance.”
¶21. Act of September 8, 1959, P.L. 829, No. 324, § 1 (19 P.S. § 1431).
¶22. 18 Pa.C.S. § 2701.
¶23. Although, no doubt, there would be a number of days prior to January 8, 1975, which would be excluded from calculating the run ' time under Rule 1100(d)(1), a detailed calculation of this excludable time is unnecessary since appellant’s waiver was executed well within the run time under Rule 1100(a)(1).
¶24. Appellant testified that he was a high school graduate, and had attended one additional year of trade school. (N.T. 2). He also testified that he had never received psychiatric care, was not under the influence of drugs or intoxicants, and that he was not waiving his rights in response to any promises made to him by the Commonwealth. (N.T. 3, 4).
¶25. In response to questions. by his counsel during the colloquy, appellant testified as follows:
“Q Now, is it your intention to — and do you know that the Commonwealth must provide you with a speedy trial and, if they do not provide you with a speedy trial, that you could have brought a motion under the Two Hundred and Seventy Day Rule; do you understand that?
A Yes.
Q And is it your intention to waive that today?
A Yes.
Q And that you are giving up any appellate rights you may have as to the use of the Two Hundred and Seventy Day Rule?
A Yes.” (N.T. 3, 4) (emphasis added).
¶26. Pa.R.Crim.P. 305 was renumbered to Pa.R.Crim.P. 307 and amended on June 29, 1977, effective as to cases in which the indictment or information is filed on or after January 1, 1978.