diff -urN clinux/czaptel.c clinux.501b2.s/czaptel.c
--- clinux/czaptel.c 2005-06-10 21:25:33.000000000 +0400
+++ clinux.501b2.s/czaptel.c 2005-10-30 18:10:47.000000000 +0300
@@ -21,6 +21,8 @@
#include "cserial.h"
#include "zaptel.h"

+#define ZT_BLOCKSIZE 1
+
/* Module information */
MODULE_AUTHOR("Roma Kurakin <rik@cronyx.ru>, Cronyx Engineering.");
MODULE_DESCRIPTION("Zaptel protocol driver " CRONYX_VERSION_INFO " ");
@@ -196,7 +198,7 @@

if (p->flag == 0) {
unsigned char *buf;
- skb = dev_alloc_skb (32*ZT_CHUNKSIZE * 4);
+ skb = dev_alloc_skb (32*ZT_CHUNKSIZE * ZT_BLOCKSIZE);

if (!skb) {
p->txbusy = 0;
@@ -205,10 +207,10 @@
}

p->txskb = skb;
- skb_put (skb, 32*ZT_CHUNKSIZE * 4);
+ skb_put (skb, 32*ZT_CHUNKSIZE * ZT_BLOCKSIZE);
p->flag = 1;

- for (buf = skb->data; buf < skb->data + 32*ZT_CHUNKSIZE*4; buf += 32*ZT_CHUNKSIZE) {
+ for (buf = skb->data; buf < skb->data + 32*ZT_CHUNKSIZE*ZT_BLOCKSIZE; buf += 32*ZT_CHUNKSIZE) {
zt_transmit(&p->span);
for (y=0;y<ZT_CHUNKSIZE;y++) {
if (p->cas && p->cas_rbsbits_tx[0] != 0x0b) {