diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index d3adaf3ed..2d61d8cfb 100644
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -2562,7 +2562,7 @@ static int zt_call(struct ast_channel *ast, char *rdest, int timeout)
 			case 'S':
 				pridialplan = (PRI_TON_SUBSCRIBER << 4) | (pridialplan & 0xf);
 				break;
-			case 'A':
+			case 'V':
 				pridialplan = (PRI_TON_ABBREVIATED << 4) | (pridialplan & 0xf);
 				break;
 			case 'R':
@@ -2632,7 +2632,7 @@ static int zt_call(struct ast_channel *ast, char *rdest, int timeout)
 				case 'S':
 					prilocaldialplan = (PRI_TON_SUBSCRIBER << 4) | (prilocaldialplan & 0xf);
 					break;
-				case 'A':
+				case 'V':
 					prilocaldialplan = (PRI_TON_ABBREVIATED << 4) | (prilocaldialplan & 0xf);
 					break;
 				case 'R':
diff --git a/configs/zapata.conf.sample b/configs/zapata.conf.sample
index 5b48ff939..fac1870ff 100644
--- a/configs/zapata.conf.sample
+++ b/configs/zapata.conf.sample
@@ -99,22 +99,22 @@
 ; pridialplan may be also set at dialtime, by prefixing the dialled number with
 ; one of the following letters:
 ; U - Unknown
-; P - Private
-; L - Local
-; N - National
 ; I - International
-; D - Dynamic
-; R - Redundant
+; N - National
+; L - Local (Net Specific)
+; S - Subscriber
+; V - Abbreviated
+; R - Reserved (should probably never be used but is included for completeness)
 ;
 ; Additionally, you may also set the following NPI bits (also by prefixing the
 ; dialled string with one of the following letters):
 ; u - Unknown
-; e - E.163/E.164
-; x - X.121
-; f - F.69
+; e - E.163/E.164 (ISDN/telephony)
+; x - X.121 (Data)
+; f - F.69 (Telex)
 ; n - National
 ; p - Private
-; r - Reserved
+; r - Reserved (should probably never be used but is included for completeness)
 ;
 ; You may also set the prilocaldialplan in the same way, but by prefixing the
 ; Caller*ID Number, rather than the dialled number.  Please note that telcos