One tells the client to tell Officer Friendly that his lawyer will be right there.
I'm obviously not a lawyer, but I think better advice would be to tell the police that he's not talking until his lawyer gets there.
In some states, I THINK there is ample case law that supports the position that an ambiguous statement like "my lawyer is on the way" is not an invocation of 6th amendment right to counsel OR 5th amendment right to remain silent. "Yeah, so he's on the way, great...lets chat before he gets here..." I know there is other case law in other states that says a relative calling the station and telling the police that Johnny has a lawyer on the way IS considered and invocation of 6th amendment right to counsel. If someone told me "my lawyer is on the way" I'd say something like "Well, let me tell you what we're going to talk about when he gets here......We're going to talk about how your buddy just threw you under the bus and said it was YOU who pulled the trigger, and HERE'S his statement. When your lawyer gets off the fairway, takes a shower in the locker room and finally gets here, the warrant request is going to be done and the only thing left for your lawyer to do will be to ask you about which assets you're going to sell to pay his bill. Now I've got to fax the investigator's report on you down to the prosecutor so we can get you in front of a judge. When he gets here, ask your lawyer what type of bond he's going to be able to swing for Murder One. Meanwhile, your pal is released on a personal bond and will likely be telling all your pals to get their stories straight so none of your crap rolls off on them. Now would you like to tell me what happened and iron out the details when he gets here, or would you rather wait until AFTER we've nailed down the deal with your partner?"
That would be followed by you watching your parter walking out the front door and into the parking lot.
I'm using the term "you" here generically, of course, in this hypothetical. Point is, if you MEAN "My lawyer told me not to say anything and I don't want any questions put to me until he gets here, SAY that." That's my non-laywer opinion anway....
Also, don't forget that the right to remain silent and the right to counsel are two different things. And that while invoking the right to an attorney will shut down any questioning, invoking the right to remain silent on crime A does not carry with it a prohibition for the police to ask about crime B as long as the police get a waiver for crime B.