A.随路信令
B.公共信道信令
C.用户环路信令

A.displaynatcounter
B.displaynat
C.displayacl
D.displaynatsession

A./c/logfiles/cello/
B./c/public_html/cello/XML_files/
C./c/commandlog/
D./c/logfiles/systemlog/

A.192.80.28.12
B.10.0.0.1
C.192.80.29.4
D.10.0.0.2
E.192.80.28.11

A.ATM
B.Signalling
C.IP
D.Terminations

A.M-MGw工作正常，用telnet登录M-MGw，密码可以随便，但用户名要正确.
B.M-MGw工作正常，用telnet登录M-MGw，用户名和密码均要正确.
C.M-MGw工作正常，用telnet登录M-MGw，用户名和密码都可以随便.
D.M-MGw工作正常，用telnet登录M-MGw，用户名可以随便，但密码要正确.

A.nataddress-group
B.natippool
C.natnetpool
D.natpool

A.MSC Identifier
B.NRI
C.IMSI
D.LAC

A.displaynattime
B.displaynatexpire
C.displaynataging-time
D.displaynattime-out

A.M2UA
B.M2PA
C.SUA
D.M3UA

A.displaynattable
B.displaynatentry
C.displaynat
D.displaynatsession