Adding Channel Bridged T1 Ports

The channel bridged T1 ports are provisioned in the database using the ent-t1 command using these parameters.

:loc – The location of the T1 card (card type limt1) that is servicing the T1 signaling link. The T1 card must be an HC MIM or an E5-E1T1 card. The location of a channel card (card type limch) cannot be specified for this parameter.

:t1port – The T1 port on the T1 card used to service the T1 signaling link. The t1port value cannot already be assigned to the T1 card specified by the loc parameter.

:encode – Specifies the type of encoding or decoding that is used on the T1 signaling link, either B8ZS or AMI. The default value is B8ZS encoding (encode=b8zs).

:t1tsel – The timing source for the T1 signaling link, master (external) or recovered. The default value is slave timing (t1tsel=line) which cannot be used for a channel bridged t1 port.

The recovered timing source can be used only with the chanbrdg=on parameter and uses the even numbered member of the bridged-pair as a clock source, ensuring that port in the pair can recover the timing from its partner.

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.

:framing – Specifies the framing format to be used on the TI signaling link, either sf or esf. The default value is sf (framing=sf).

:ll – The length of the cable, in feet, used for the T1 signaling link. The value of the ll parameter is from 0 to 655. The default value for this parameter is 133.

:force=yes – Required when the even numbered T1 port being channel bridged is provisioned in the database before this procedure is performed.

:chanbrdg – Specifies whether or not the odd numbered T1 port specified in this procedure is channel bridged to its adjacent even numbered T1 port. Table B-9 shows the T1 ports that can be specified with the chanbrdg=on parameter and the even-numbered T1 ports that are bridged to the odd numbered T1 port.

Table B-9 Channel Bridging Ports

Odd Numbered T1 Port	Even Numbered Bridged T1 Port
1	2
3	4
5	6
7	8

The ent-t1 command contains the framing=esfperf, linkclass, and minsurate parameters that are not used in this procedure. These parameters and their usage are described in Adding Unchannelized T1 Ports.

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

The T1 card cannot contain channelized and un-channelized T1 ports.

Display the cards in the EAGLE using the rtrv-card command.

rlghncxa03w 09-05-28 09:12:36 GMT EAGLE5 41.0.0
CARD   TYPE      APPL     LSET NAME   LINK SLC LSET NAME   LINK SLC
1102   TSM       GLS      
1113   GSPM      OAM
1114   TDM-A
1115   GSPM      OAM
1116   TDM-B
1117   MDAL
1207   LIMT1     SS7ANSI  lsnt265     A    0  
1208   LIMCH     SS7ANSI  lsnt265     A    1  lsnt265      A2   2  
1211   LIME1     CCS7ITU  lsne145     A    0  
1212   LIMCH     CCS7ITU  lsne145     A    1  lsne145      A2   2  
1215   LIMT1     SS7ANSI  
1216   LIMCH     SS7ANSI  
1316   DCM       STPLAN

If there are no LIMT1 cards shown in the rtrv-card output, perform Adding a LIM-T1 Card to add an HC-MIM or E5-E1T1 card to the database. Continue the procedure with 2.

If LIMT1 cards are shown in the rtrv-card output, continue the procedure with 2.

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    ----
```
Channel bridged T1 ports cannot be added to a T1 card containing unchannelized T1 ports. If the T1 card contains unchannelized T1 ports, choose another T1 card from 1 and repeat this step, or add a new H- MIM or an E5-E1T1 card by performing Adding a LIM-T1 Card.

If the rtrv-t1 output shows that the T1 card has T1 ports 3, 4, 5, 6, 7, or 8 assigned to it, or that T1 ports on the T1 card are channel bridged, continue the procedure with 3.

If the rtrv-t1 output shows that the T1 card does not have T1 ports 3, 4, 5, 6, 7, or 8 assigned to it, or that T1 ports on the T1 card are not channel bridged, verify that the T1 card that the channel bridged T1 port will be assigned to is an HC-MIM or an E5-E1T1 card. The part number of the HC-MIM is 870-2671-XX. The part number of the E5-E1T1 is 870-1873-XX. If the T1 card is not an HC-MIM or an E5-E1T1 card, add a new HC-MIM or an E5-E1T1 card by performing Adding a LIM-T1 Card.

After the new HC-MIM or E5-E1T1 card has been added, continue the procedure with 8.

Continue the procedure by performing one of these substeps:
1. If the rtrv-t1 output shows that the T1 card has T1 ports 3, 4, 5, 6, 7, or 8 assigned to it, or that T1 ports on the T1 card are channel bridged, continue this procedure with 3.
2. Channel bridged T1 ports cannot be added to an T1 card containing unchannelized T1 ports. If the T1 card contains unchannelized T1 ports, choose another T1 card from 1 and repeat this step, or add a new HC-MIM or an E5-E1T1 card by performing Adding a LIM-T1 Card.
3. If the rtrv-t1 output shows that the T1 card does not have T1 ports 3, 4, 5, 6, 7, or 8 assigned to it, or that T1 ports on the T1 card are not channel bridged, verify that the T1 card that the channel bridged T1 port will be assigned to is an HC-MIM or an E5-E1T1 card. The part number of the HC-MIM is 870-2671-XX. The part number of the E5-E1T1 is 870-1873-XX. If the T1 card is not an HC-MIM or an E5-E1T1 card, add a new HC-MIM or an E5-E1T1 card by performing Adding a LIM-T1 Card.
  - If an existing T1 card is being used in this procedure continue the procedure with 3.
  - If an HC-MIM or an E5-E1T1 card was added in this substep or substep b, continue the procedure by performing one of these steps.
    - If the T1 cards shown in this step are on the same shelf as the card that will contain the T1 port that is being added, and these cards have T1 ports 3 through 8 provisioned, contain channel bridged T1 ports, or unchannelized T1 ports, continue the procedure with 8.
    - If the T1 cards shown in this step are not on the same shelf as the card that will contain the T1 port that is being added, continue the procedure with 4.
    - If the T1 cards shown in this step are on the same shelf as the card that will contain the T1 port that is being added, and these cards do not have T1 ports 3 through 8 provisioned, do not contain channel bridged T1 ports, or do not have unchannelized T1 ports, continue the procedure with 4.
Display the T1 signaling links in the EAGLE by entering this command.
rtrv-slk:class=t1
```
rlghncxa03w 09-05-19 21:17:04 GMT EAGLE5 41.0.0
                                   L2T               PCR  PCR   T1   T1
LOC  LINK LSN         SLC TYPE     SET  BPS    ECM   N1   N2    LOC  PORT TS
1207 A    lsnt256      0  LIMT1    1    56000  BASIC ---  ----- 1207 2    2
1208 A    lsnt256      1  LIMCH    1    56000  BASIC ---  ----- 1207 1    4
1208 A2   lsnt256      2  LIMCH    1    56000  BASIC ---  ----- 1207 1    6
```
If an even numbered T1 port is to be channel bridged, and that T1 port is assigned to signaling links, these signaling links must be removed before the T1 port can be channel bridged. Perform Removing an SS7 Signaling Link to remove these signaling links. After the signaling links have been removed, continue the procedure with 4.

If the even numbered T1 port to be channel bridged is not assigned to signaling links, continue the procedure with 4.
Verify that HIPR2 cards are installed in card locations 9 and 10 in the shelf containing the HC MIM or E5-E1T1 card that will contain the T1 port being added in this procedure by entering this command.
rept-stat-gpl:gpl=hipr2

This is an example of the possible output.
```
rlghncxa03w 09-07-05 08:12:53 GMT  41.1.0
GPL        CARD      RUNNING            APPROVED      TRIAL
HIPR2      1109      126-002-000        126-002-000   126-003-000
HIPR2      1110      126-002-000        126-002-000   126-003-000
HIPR2      1209      126-002-000        126-002-000   126-003-000
HIPR2      1210      126-002-000        126-002-000   126-003-000
HIPR2      1309      126-002-000        126-002-000   126-003-000
HIPR2      1310      126-002-000        126-002-000   126-003-000
HIPR2      2109      126-002-000        126-002-000   126-003-000
HIPR2      2110      126-002-000        126-002-000   126-003-000
Command Completed
```
If HIPR2 cards are installed in the shelf containing the HC MIM or E5-E1T1 card, continue the procedure by performing one of these steps.
- If the card is an E5-E1T1 card, continue the procedure with 8.
- If the card is an HC MIM, continue the procedure with 5.
If HIPR2 cards are not installed on the shelf containing the HC MIM or E5-E1T1 card, go to Installation Guide and install the HIPR2 cards. Once the HIPR2 cards have been installed, continue the procedure by performing one of these steps.
- If the card is an E5-E1T1 card, continue the procedure with 8.
- If the card is an HC MIM, continue the procedure with 5.
Verify whether or not that the Fan feature is on, by entering the rtrv-feat command. If the Fan feature is on, the entry FAN = on appears in the rtrv-feat command output.

Note:
The rtrv-feat command output contains other fields that are not used by this procedure. If you wish to see all the fields displayed by the rtrv-feat command, see the rtrv-feat command description in Commands User's Guide.

If the Fan feature is on, continue the procedure with 8.

If the Fan feature is off, continue the procedure with 6.
Turn the Fan feature on by entering this command.
chg-feat:fan=on

Note:
Once the Fan feature is turned on with the chg-feat command, it cannot be turned off.
The Fan feature must be purchased before you turn this feature on with the chg-feat command. If you are not sure if you have purchased the Fan feature, contact your Sales Representative or Account Representative.

When the chg-feat has successfully completed, this message appears.
```
rlghncxa03w 09-05-28 11:43:04 GMT EAGLE5 41.0.0
CHG-FEAT: MASP A - COMPLTD
```
The shelf containing the HC-MIM being added in this procedure must have fans installed. Verify whether or not fans are installed on the shelf.

If the fans are installed, continue the procedure with 8.

If the fans are not installed on the shelf containing the HC-MIM, go to Installation Guide and install the fans. After the fans have been installed and tested, continue the procedure with 8.

Add the new T1 interface information to the database using the ent-t1 command and the parameter combinations shown in Table B-10.

Table B-10 Channel Bridged T1 Port Combinations

Mandatory Parameters
:loc=location of the T1 card	:t1tsel=external, recovered
:t1port=1, 3, 5, 7	:chanbrdg=on
Optional Parameters
:framing=sf, esf Default value = sf	:ll=0 - 655 Default value = 133
:encode=ami, b8zs Default value = b8zs	:force=yes
Notes: 1. Channel cards (LIMCH card type) cannot be specified with the `ent-t1` command. 2. To configure the T1 port for master timing, use the `t1tsel=external` parameter. 3. The `linkclass=chan` parameter configures a channelized T1 port. Specifying the `linkclass=chan` parameter in this procedure is unnecessary as this is the default value for the `linkclass` parameter. 4. The T1 card cannot contain channelized and un-channelized T1 ports. 5. The `force=yes` parameter must be used when the even numbered port being channel bridged is shown in the `rtrv-t1` output in 2. If the even numbered port being channel bridged is not shown in the `rtrv-t1` output in 2, the `force=yes` parameter cannot be used.

For this example, enter these commands.

ent-t1:loc=1215:t1port=1:encode=b8zs:t1tsel=external:chanbrdg=on

ent-t1:loc=1217:t1port=1:encode=ami:t1tsel=recovered :chanbrdg=on

Verify the changes using the rtrv-t1 command specifying the card location and the t1port value specified in 8. For this example, enter these commands.

rtrv-t1:loc=1215: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
1215  1      B8ZS    EXTERNAL  SF       133  MASTER    CHAN    ----

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

rtrv-t1:loc=1217:t1port=1

This is an example of the possible output.

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

      T1                                               LINK    MINSU
LOC   PORT   ENCODE  T1TSEL    FRAMING  LL   CHANBRDG  CLASS   RATE
1217  1      AMI     RECOVERED SF       133  MASTER    CHAN    ----

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

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-7 Adding Channel Bridged T1 Ports

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