The ornamental design for a telephonelineconnectiontransponder, as shown and described.
FIG. 1 is a perspective view of a telephone line connection transponder, showing my new design;
FIG. 2 is a perspective view thereof in a tilted state;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left side elevational view thereof;
FIG. 8 is a right side elevational view thereof; and,
FIG. 9 is a right side elevational view thereof in a tilted state.
The broken line showing of the connectors and horizontal lines on the bottom of the transponder is for environmental purposes only and forms no part of the claim design.