EXHIBIT 1
JOINT FILING AGREEMENT
Pursuant to Rule 13(d)-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned acknowledges and agrees that the foregoing statement on Schedule 13D is filed on behalf of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of the undersigned without the necessity of filing additional joint acquisition statements. Each of the undersigned acknowledges that it shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.
Dated as of October 11, 2018.
| OAKTREE OPTICAL HOLDINGS, L.P. | |
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| By: | Oaktree Fund GP, LLC | |
| Its: | General Partner | |
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| By: | Oaktree Fund GP I, L.P. | |
| Its: | Managing Member | |
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| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Authorized Signatory | |
| OAKTREE FUND GP, LLC | |
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| By: | Oaktree Fund GP I, L.P. | |
| Its: | Managing Member | |
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| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Authorized Signatory | |
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| OAKTREE FUND GP I, L.P. | |
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| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Authorized Signatory | |
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| OAKTREE CAPITAL I, L.P. | |
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| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Vice President | |
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| OCM HOLDINGS I, LLC | |
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| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Vice President | |
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| OAKTREE HOLDINGS, LLC | |
| | | |
| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Vice President | |
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| OAKTREE CAPITAL GROUP, LLC | |
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| By: | Oaktree Capital Group Holdings GP, LLC | |
| Its: | Manager | |
| | | |
| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Vice President | |
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| OAKTREE CAPITAL GROUP HOLDINGS GP, LLC |
| | | |
| By: | /s/ Brian Price | |
| | Name: Brian Price | |
| | Title: Vice President | |
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