Awk is horrible, use Python

chris.py

#!/usr/bin/env python 

import re
import fileinput

good_match = re.compile(r'sip:\+?[0-9]+@')

for line in fileinput.input():
    parts = line.split('|')

    if good_match.match(parts[17]) and good_match.match(parts[18]):
        # Good line, print it to stdout 
        print line 
    else:
        # Bad match, do nothing
        pass