User guide

95
Chapter 5 - AT Commands
>Dn Embedded Protocol Analyzer
Values: 0, 1, 2, 3, 98, or 99
Default: n/a
Records and analyzes various protocols on the B-channel, D-channel, and DTE-DCE
interface. The Embedded Protocol Analyzer is useful as a diagnostic tool, in that essential data
messages display, which enables you to observe interactive operations of the TA, Central
Exchange, and remote communications equipment.
>D0 Displays B-channel traffic, decoded as V.120
>D1 Displays D-channel traffic, decoding layers 2 and 3 (Q.921 and Q.931)
>D2 Displays D-channel traffic, decoding layer 2 only (Q.921)
>D3 Displays D-channel traffic, decoding layer 3 only (Q.931)
>D5 Displays async PPP data
>D6 Displays sync PPP data
>D98 Disables Embedded Protocol Analyzer, buffered data unchanged
>D99 Enables Embedded Protocol Analyzer, clearing buffered data
!DNn Disable Data DN/MSN n
Unit: Decimal ASCII code
Values: n=1 (disable Data DN/MSN 1),
n=2 (disable Data DN/MSN 2)
Default: All ports are enabled
!DNn disables a Data DN/MSN which will effectively disable the associated TA port from
receiving any data calls. However, the port will still be able to originate data calls. This is
useful for applications where a specific port is for dial-out only. Since the TA has only one
serial port, both Data DN/MSN 1 and 2 would have to be disabled in order to not accept a
call. If no port number is given then the assumed port number is that of the port from which
the command was received. If port n had a DN/MSN set, then that DN/MSN is not erased.
Enabling the port later by using the @CONFIG configuration menu or the !ENn command will
re-enable that DN/MSN. AT!L<CR> may be used to review which ports are disabled (displays
PORT DISABLED). The @CONFIG configuration menu can also be used to disable or
review the disabled ports.
!N1=n DN0
Sets the Data Directory Number /Multiple Subscriber Number (DN/MSN) for data ports 1
and 2. The DN/MSN is a number assigned to the BRI at subscription time by the ISDN service
provider. The DN/MSN is a string of up to 25 characters; valid characters are 0-9, the *
character, and the # character. If used as an MSN, a subaddress can be added to the number (if
one is needed) by using the : character followed by the subaddress number.
!N1=n sets the Data DN/MSN for port 1
!N2=n sets the Data DN/MSN for port 2
Usage: !N1=n
Function:Data DN/MSN
Values: n = 25-character string