SECURITIES AND EXCHANGE COMMISSION
 Washington, DC 20549
Schedule 13G
 (Rule 13d-102)
INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934
 (Amendment No. 2)(1)
Coherent Communications Systems Corporation
 (Name of Issuer)
Common Stock, $.01 par value per share
(Title of Class of Securities)
192478 10 5
(CUSIP Number)
(1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP NO.     192478 10 5

1.  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Safeguard Scientifics, Inc. 23-1609753

2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                 (a) / x /
                                                 (b) /   /
3.  SEC USE ONLY

4.  CITIZENSHIP OR PLACE OF ORGANIZATION

    Pennsylvania

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

    5.   SOLE VOTING POWER

    6.   SHARED VOTING POWER                4,843,342

    7.   SOLE DISPOSITIVE POWER

    8.   SHARED DISPOSITIVE POWER           4,843,342

9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    4,843,342

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* / /

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

    32.1%

12. TYPE OF REPORTING PERSON*

    CO	

CUSIP NO.     192478 10 5

1.  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Safeguard Scientifics (Delaware), Inc. 51-0291171

2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                 (a) / x /
                                                 (b) /   /
3.  SEC USE ONLY

4.  CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

    5.   SOLE VOTING POWER

    6.   SHARED VOTING POWER                4,843,342

    7.   SOLE DISPOSITIVE POWER

    8.   SHARED DISPOSITIVE POWER           4,843,342

9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    4,843,342

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* / /

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

    32.1%

12. TYPE OF REPORTING PERSON*

    CO	

Item 1 (a) Name of Issuer:
Coherent Communications Systems Corporation
Item 1 (b) Address of Issuer's Principal Executive Offices:
44084 Riverside Parkway
Leesburg, VA 22075
Item 2 (a) Name of Person Filing:
(1) Safeguard Scientifics, Inc.
(2) Safeguard Scientifics (Delaware), Inc.
Item 2 (b) Address of Principal Business Office:
(1) 800 The Safeguard Building 435 Devon Park Drive Wayne, PA 19087-1945
(2) 103 Springer Building 3411 Silverside Road Wilmington, DE 19803
Item 2 (c) Citizenship:
(1) Pennsylvania
(2) Delaware
Item 2 (d) Title of Class of Securities:
Common Stock, $.01 par value per share
Item 2 (e) CUSIP Number:
192478 10 5
Item 3 If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b),
check whether the person filing is a :
(a) / / Broker or dealer registered under Section 15 of the Act.
(b) / / Bank as defined in Section 3(a)(6) of the Act.
(c) / / Insurance Company as defined in Section 3(a)(19) of the Act.
(d) / / Investment Company registered under Section 8 of the Investment Company Act of 1940.
(e) / / Investment Adviser registered under Section 203 of the Investment Advisers Act of 1940.
(f) / / Employee Benefit Plan, Pension Fund which is subject to the provisions of the Employee Retirement Income Security Act of 1974 or Endowment Fund; see 13d-1(b)(1)(ii)(F).
(g) / / Parent Holding Company, in accordance with Rule 13d-1(b)(ii)(G); see Item 7.

(h) / / Group, in accordance with Rule 13d-
1(b)(1)(ii)(H).
Not Applicable
Item 4 Ownership:
(a) Amount Beneficially Owned:
4,843,342 shares of Common Stock
(b) Percent of Class:
32.1%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
0
(ii) shared power to vote or to direct the vote:
4,843,342
(iii) sole power to dispose or to direct the disposition of:
0
(iv) shared power to dispose or to direct the disposition of:
4,843,342
Safeguard Scientifics (Delaware), Inc., a wholly owned subsidiary of Safeguard Scientifics, Inc., is the record holder of the 4,843,342 shares of common stock.
Item 5 Ownership of Five Percent or Less of a Class:
Not applicable
Item 6 Ownership of More than Five Percent on Behalf of
Another Person:
Not applicable
Item 7 Identification and Classification of the Subsidiary
 Which Acquired the Security Being Reported on by the Parent Holding Company:
Safeguard Scientifics (Delaware), Inc., a Delaware corporation, is a wholly owned subsidiary of Safeguard Scientifics, Inc..
Item 8 Identification and Classification of Members of the Group:
Safeguard Scientifics (Delaware), Inc. and Safeguard Scientifics, Inc. are members of a group for purposes of Sections 13(d) and 13(g) of the Securities Exchange Act of 1934.

Item 9 Notice of Dissolution of Group:
Not applicable.
Item 10 Certification:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. In executing this statement, the undersigned agrees, to the extent required by Rule 13d-1(f), that this statement is being filed on behalf on each of the Reporting Persons herein.
SAFEGUARD SCIENTIFICS, INC.

                        By: /s/ James A. Ounsworth
                             James A. Ounsworth
                             Sr. Vice President and
                             General Counsel

Dated: February 7, 1997	

SAFEGUARD SCIENTIFICS (DELAWARE), INC.

                        By: /s/ James A. Ounsworth
                             James A. Ounsworth
                             Vice President

Dated:  February 7, 1997