Are there phones or speakers?
Yes, there is a phone.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    7
2     1   to the left of   10
3     1   to the left of    5
4     1   to the left of    8
..  ...              ...  ...
59   14           around   12
60   15  to the right of    6
61   15   to the left of    3
62   15   to the left of    9
63   16  to the right of    7

[64 rows x 3 columns]