| Symbol | Name | Country | Exchange |
|---|---|---|---|
| ADTN | ADTRAN, Inc. | US | NASDAQ |
| CTBB | Qwest Corporation 6.5% Notes due 2056 | US | NYSE |
| CTDD | Qwest Corporation 6.75% Notes due 2057 | US | NYSE |
| LUMN | Lumen | US | NYSE |
| UTSI | UTStarcom Holdings Corp | US | NASDAQ |
| 500108 | Mahanagar Telephone Nigam Limited | IN | BSE |
| CMM | Commcenter S.A. | ES | MC |