Mine

make[1]: Entering directory `/usr/src/AsteriskTarball/asterisk-1.2.4/channels'
gcc  -pipe  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -g3  -Iinclude -I../include -D_REENTRANT -D_GNU_SOURCE  -O6 -march=i686 -DZAPTEL_OPTIMIZATIONS         -fomit-frame-pointer  -Wno-missing-prototypes -Wno-missing-declarations -DZAPATA_PRI -DIAX_TRUNKING -DCRYPTO -fPIC    -c -o chan_sip.o chan_sip.c
chan_sip.c: In function `expire_register':
chan_sip.c:5622: error: `p' undeclared (first use in this function)
chan_sip.c:5622: error: (Each undeclared identifier is reported only once
chan_sip.c:5622: error: for each function it appears in.)
chan_sip.c: In function `parse_register_contact':
chan_sip.c:5916: error: syntax error before ';' token
make[1]: *** [chan_sip.o] Error 1
make[1]: Leaving directory `/usr/src/AsteriskTarball/asterisk-1.2.4/channels'
make: *** [subdirs] Error 1