For instance.. when I try to use G723.1 on my phone (and just call in from my PRI line) I get: Unable to find a path from g723 to ulaw. Unable to find a path from ulaw to g723. No path to translate from Zap/1-1(68) to Sip/201-80c7(1). Same things happens if I call in on my current provider's number which uses G711 for the codec.