Removing the T1 Interface Parameters

This procedure is used to remove a T1 interface from the database using the dlt-t1 command using these parameters.

:loc – The location of the T1 card (card type limt1) containing the T1 interface being removed.

:t1port – The T1 port on the T1 card containing the T1 interface being removed.

The T1 interface to be removed must exist in the database. This can be verified in step 1.

To remove the T1 interface information contained on a T1 card, all signaling links serviced by that T1 card must be removed from the database. This can be verified with the rtrv-t1 command, specifying the card location and t1port value on the T1 card, and the rtrv-slk command, specifying the location of any cards (T1 or channel cards) shown in the rtrv-t1 output. If there are any signaling links being serviced by the T1 card, go to the Removing an SS7 Signaling Link procedure and remove these signaling links.

Even numbered T1 ports cannot be removed if the even numbered T1 port is channel bridged. Remove the corresponding odd numbered T1 port (see Table B-5) to remove the even numbered channel bridged T1 port.

Display the existing T1 interfaces in the database using the rtrv-t1 command with no parameters.
```
rlghncxa03w 09-05-19 21:17:04 GMT EAGLE5 41.0.0

      T1                                              LINK    MINSU
LOC   PORT  ENCODE  T1TSEL    FRAMING  LL   CHANBRDG  CLASS   RATE
1207  1     AMI     EXTERNAL  ESF      50   -----     CHAN    ----
1215  2     B8ZS    LINE      SF       100  -----     CHAN    ----
```
If the T1 port being removed is an even numbered T1 port and is channel bridged, select the corresponding odd numbered T1 port to remove (see Table B-5) and go to step 2.

If the even numbered T1 port is not channel bridged, it can be removed with the dlt-t1 command. go to step 2.

Display the timeslots that are serviced by the T1 card containing the T1 interface information to be removed using the rtrv-t1 command specifying the card location and the t1port value from step 1. For this example, enter this command.

rtrv-t1:loc=1207:t1port=1

rlghncxa03w 09-05-28 09:12:36 GMT EAGLE5 41.0.0

      T1                                              LINK    MINSU
LOC   PORT  ENCODE  T1TSEL    FRAMING  LL   CHANBRDG  CLASS   RATE
1103  1     B8ZS    LINE      SF       133  ------    CHAN    ----

TS1  -------    TS9  -------    TS17 1208,A2
TS2  1207,A     TS10 -------    TS18 -------
TS3  -------    TS11 -------    TS19 -------
TS4  -------    TS12 -------    TS20 -------
TS5  -------    TS13 -------    TS21 -------
TS6  1208,A     TS14 -------    TS22 -------
TS7  -------    TS15 -------    TS23 -------
TS8  -------    TS16 -------    TS24 -------

If this step shows any timeslots that are serviced by the T1 card, go to the Removing an SS7 Signaling Link procedure and remove the timeslots and signaling links serviced by the T1 card.

Remove the T1 interface information to the database using the dlt-t1 command specifying the card location of the T1 card and the T1 port on that card. For this example, enter these commands.

dlt-t1:loc=1207:t1port=1
Verify the changes using the rtrv-t1 command with the card location and the t1port value specified in 3 .
For this example, enter this command.

rtrv-t1:loc=1207:t1port=1
```
rlghncxa03w 10-04-19 21:17:04 GMT EAGLE5 42.0.0
E2737 Cmd Rej: The T1PORT at the specified location is not equipped
```

Back up the new changes using the chg-db:action=backup:dest=fixed command. These messages should appear, the active Maintenance and Administration Subsystem Processor (MASP) appears first.

BACKUP (FIXED) : MASP A - Backup starts on active MASP.
BACKUP (FIXED) : MASP A - Backup on active MASP to fixed disk complete.
BACKUP (FIXED) : MASP A - Backup starts on standby MASP.
BACKUP (FIXED) : MASP A - Backup on standby MASP to fixed disk complete.

Figure B-9 Removing the T1 Interface Parameters