side line warning

[sloth]

My white hat and I were discussing the side line warning provision last night after our game. He indicated that once one team gets a side line warning, that warning applies to both side lines. For example, I throw the flag on my sideline as a the LJ. The next series the L has an issue with his sideline. Instead of the visiting teams side recieving their first sideline warning, they'd recieve the five yard penalty.

I've looked in the rule and case books, but haven't found that yet. Any one got the reference?

...also as an after thought...on my sideline I had one coach that was communicating with the coach in the box via walkie talkie (instead of a head set). He was the only coach to use it and no players communicated at any point with the wireless device. Is this legal?