I believe the trouble to still have to do with splitting the pairs of ext 213 & 214. As mentioned, 215 and 216 work fine - if you are using a 568B Cat5 patch cord as an interface cable, the green and blue pairs will not be split. However, you mentioned that 213 was connected to orange white / brown white. If, as I suspect, you have used a 568B cord as an interface cable, extension 213 should connect to white orange / brown white with extension 214 using orange white / white brown.
If the pairs are split between these two extensions it it very possible for outgoing to work but incoming to fail. If you call a display phone from either of these extensions do the extension numbers report correctly?
