Making a Non-Channel Bridged T1 Port from a Channel Bridged T1 Port

This procedure is used to make a non-channel bridged T1 port from a channel bridged T1 port using the chg-t1 command. A channel bridged T1 port is an odd numbered T1 port that contains the entry MASTER in the CHANBRDG column in the rtrv-t1 output. Other actions can be performed on T1 ports. To perform these actions on the T1 ports, perform one of these procedures.

To change the attributes of a channelized T1 port - Changing the Attributes of a Channelized T1 Port
To change the attributes of an unchannelized T1 port - Changing the Attributes of an Unchannelized T1 Port
To make a channel bridged T1 port from a channelized T1 port that is not channel bridged - Making a Channel Bridged T1 Port from a Channelized T1 Port

To make a non-channel bridged T1 port from a channel bridged T1 port, these parameters are used with the chg-t1 command.

:loc – The location of the T1 card (card type limt1) that contains the channel bridged T1 port. The location of a channel card (card type limch) cannot be specified for this parameter. The T1 card can be either an HC-MIM or an E5-E1T1 card.

:t1port – The T1 port being changed in this procedure. Only the odd numbered T1 ports, 1, 3, 5, or 7, can be specified for a channel bridged T1 port.

:encode – Specifies the type of encoding or decoding that is used on the T1 signaling link, either B8ZS or AMI.

:t1tsel – The timing source for the T1 signaling link, master (external) or slave (line). If the t1tsel value for the channel bridged T1 port is recovered, the t1tsel value must be changed to either line or external when the channel bridged T1 port is changed to a non-channel bridged T1 port.

Note:

To use an external high-speed master clock source other than RS-422, TDMs 870-0774-15 or later must be installed in card locations 1114 and 1116, and the TDM Global Timing Interface options must be configured. For more information, see Configuring the Options for the TDM Global Timing Interface.

:chanbrdg=off – Specifies that the odd numbered T1 port specified in this procedure is not channel bridged to its adjacent even numbered T1 port.

The T1 card specified in this procedure must be in the database. This can be verified with the rtrv-t1 command.

If either the encode, t1tsel, framing, or ll values are being changed, all the signaling links serviced by the T1 card must be taken out of service.

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    MINS
LOC   PORT  ENCODE  T1TSEL    FRAMING  LL   CHANBRDG  CLASS   RATE
1201  1     B8ZS    EXTERNAL  SF       133  MASTER    CHAN    ----
1201  2     B8ZS    EXTERNAL  SF       133  SLAVE     CHAN    ----
1203  2     B8ZS    LINE      SF       133  ------    CHAN    ----
1211  2     B8ZS    LINE      SF       133  ------    CHAN    ----
```
A channel bridged T1 port is an odd numbered T1 port that contains the entry MASTER in the CHANBRDG column in the rtrv-t1 output.

If there are no channel bridged T1 ports shown in the rtrv-t1 output, this procedure cannot be performed.
If channel bridged T1 ports shown in the rtrv-t1 output, continue the procedure by performing one of these steps.
- If the encode, t1tsel, framing, or ll parameters are not being changed in this procedure, continue the procedure with 6.
- If the encode, t1tsel, framing, or ll parameters are being changed in this procedure, continue the procedure with 2.

Display the timeslots that are serviced by the T1 card containing the T1 interface information to be changed using the rtrv-t1 command specifying the card location and the t1port value from 1.

For this example, enter this command.

rtrv-t1:loc=1201:t1port=1

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

      T1                                              LINK    MINS
LOC   PORT  ENCODE  T1TSEL    FRAMING  LL   CHANBRDG  CLASS   RATE
1201  1     B8ZS    EXTERNAL  SF       133  MASTER    CHAN    ----

TS1  1201,A     TS9  -------    TS17 -------
TS2  -------    TS10 -------    TS18 -------
TS3  -------    TS11 -------    TS19 -------
TS4  -------    TS12 -------    TS20 -------
TS5  1202,A     TS13 -------    TS21 -------
TS6  -------    TS14 -------    TS22 -------
TS7  -------    TS15 -------    TS23 -------
TS8  -------    TS16 -------    TS24 -------

Display the signaling links that are assigned to the T1 card by entering the rtrv-slk command with the card location specified in 2. For this example, enter this command.

rtrv-slk:loc=1201

rlghncxa03w 09-05-19 21:17:04 GMT EAGLE5 41.0.0
                                   L2T               PCR  PCR   E1   E1
LOC  LINK LSN         SLC TYPE     SET  BPS    ECM   N1   N2    LOC  PORT TS
1201 B    lsn1         12 LIMT1    1    56000  BASIC ---  ----- 1201 1    10

Check the status of the signaling links shown in 3 using the rept-stat-slk command with the card location and signaling link.
For this example, enter these commands.

rept-stat-slk:loc=1201:link=b
```
rlghncxa03w 09-05-23 13:06:25 GMT EAGLE5 41.0.0
SLK     LSN       CLLI        PST          SST       AST
1201,B  lsn1      ----------- IS-NR        Avail     ----
  ALARM STATUS       = No Alarms
  UNAVAIL REASON     = --
  T1 status          = 1201, RCVRY-T1F:FAC-T1 Port 1 available
```
If all the signaling links shown in this step are out of service, continue the procedure with 6.

If any of the signaling links shown in this step are in service, continue the procedure with 5.
Deactivate the signaling links shown in 4 using the dact-slk command.
For this example, enter these commands.

dact-slk:loc=1201:link=b

When this command has successfully completed, this message should appear.
```
rlghncxa03w 09-05-07 08:41:12 GMT  EAGLE5 41.0.0
Deactivate Link message sent to card
```

Change the T1 port using the chg-t1 command and the parameter combinations shown in Table B-17.

Table B-17 Non-Channel Bridged T1 Port Parameter Combinations

Mandatory Parameters

:loc=location of the T1 card

:t1port=T1 port being changed, either 1, 3, 5, or 7

:chanbrdg=off

Optional Parameters

:encode=ami, b8zs

:framing=sf, esf

:ll=0 - 655

:t1tsel=line, external. If the current t1tsel value is recovered, the t1tsel value must be changed to either line or external.

For this example, enter this command.

chg-t1:loc=1201:t1port=1:encode=ami:framing=esf:ll=500:t1tsel=line:chanbrdg=off

Note:

When the chanbrdg=off parameter is specified with the chg-t1 command, the even numbered T1 port that was channel bridged to the T1 port specified in this step is removed from the database.

Verify the changes using the rtrv-t1 command specifying the card location and the t1port value specified in 6.

For this example, enter these commands.

rtrv-t1:loc=1201:t1port=1

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

      T1                                              LINK    MINS
LOC   PORT  ENCODE  T1TSEL    FRAMING  LL   CHANBRDG  CLASS   RATE
1201  1     AMI     LINE      ESF      500  ------    CHAN    ----

TS1  1201,A     TS9  -------    TS17 -------
TS2  -------    TS10 -------    TS18 -------
TS3  -------    TS11 -------    TS19 -------
TS4  -------    TS12 -------    TS20 -------
TS5  1202,A     TS13 -------    TS21 -------
TS6  -------    TS14 -------    TS22 -------
TS7  -------    TS15 -------    TS23 -------
TS8  -------    TS16 -------    TS24 -------

If the signaling links were not deactivated in 5, continue the procedure with 9.

If the signaling links were deactivated in 5, continue the procedure with 8.

Activate the signaling links that were deactivated in 5 using the act-slk command.
For this example, enter these commands.

act-slk:loc=1201:link=b

When this command has successfully completed, this message should appear.
```
rlghncxa03w 09-05-07 08:41:12 GMT  EAGLE5 41.0.0
Activate Link message sent to card
```

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-13 Making a Non-Channel Bridged T1 Port from a Channel Bridged T1 Port

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