Changing the Attributes of an Unchannelized E1 Port

This procedure is used to change the attributes of an unchannelized E1 port using the chg-e1 command. An unchannelized E1 port is an E1 port whose LINKCLASS value is UNCHAN, shown in the LINKCLASS column in the rtrv-e1 output. Other actions can be performed on E1 ports. To perform these actions on the E1 ports, perform one of these procedures.

• To change the attributes of a channelized E1 port - Changing the Attributes of a Channelized E1 Port
• To make a channel bridged E1 port from a channelized E1 port - Making a Channel Bridged E1 Port from a Channelized E1 Port
• To make a non-channel bridged E1 port from a channel bridged E1 port - Making a Non-Channel Bridged E1 Port from a Channel Bridged E1 Port

To change the attributes of an unchannelized E1 port, these parameters are used with the chg-e1 command.

:loc – The location of the E1 card that contains the unchannelized E1 port (card type lime1) that is servicing the E1 signaling link. The location of a channel card (card type limch) cannot be specified for this parameter. The E1 card can be either an HC-MIM or an E5-E1T1 card.

:e1port – The E1 port being changed in this procedure.

:crc4 – Specifies whether or not CRC4 is enabled on the E1 signaling link.

:cas – Specifies whether CAS or CCS is used on the E1 signaling link. CAS is enabled with the cas=on parameter. CCS is enabled with the cas=off parameter. For an unchannelized E1 port, the cas value must be off.

:encode – Specifies the type of encoding or decoding that is used on the E1 signaling link, either HDB3 or AMI.

:e1tsel – The timing source for the E1 signaling link, master (external) or slave (line).

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.

:si – Specifies the value of the two spare international bits of NFAS data, from 0 to 3.

:sn – Specifies the value of the five spare national bits of NFAS data, from 0 to 31.

:minsurate – Specifies the minimum number of signaling units (FISUs and LSSUs) per second that are transmitted on the outbound E1 signaling link during idle periods or when there is an unused portion of the link’s bandwidth. The value of this parameter is from 500 to 2000 signaling units per second, with the default value of 1000 signaling units per second.

The E1 card specified in this procedure must be in the database. This can be verified with the rtrv-e1 command.

If either the crc4, cas, encode, or e1tsel values are being changed, all the signaling links serviced by the E1 card must be taken out of service.

1. Display the existing E1 interfaces in the database using the rtrv-e1 command with no parameters.

   rlghncxa03w 09-05-19 21:17:04 GMT EAGLE5 41.0.0
   
         E1                                                   LINK    MINSU
   LOC   PORT  CRC4  CAS  ENCODE  E1TSEL    SI  SN  CHANBRDG  CLASS   RATE
   1201  2     ON    ---  HDB3    EXTERNAL  3   5   ------    UNCHAN  1300
   1203  2     OFF   ---  HDB3    LINE      1   7   ------    CHAN    ----
   1211  2     ON    ---  HDB3    LINE      0   0   ------    CHAN    ----
   

   An unchannelized E1 port is an E1 port whose LINKCLASS value is UNCHAN.

   If there are no unchannelized E1 ports shown in the rtrv-e1 output, this procedure cannot be performed.

   If there are unchannelized E1 ports shown in the rtrv-e1 output, continue the procedure by performing one of these steps.

   • If the crc4, cas, encode, or e1tsel parameters are being changed in this procedure, continue the procedure with 2.
   • If the crc4, cas, encode, or e1tsel parameters are not being changed in this procedure, continue the procedure with 5.
2. Display the signaling links that are assigned to the E1 card by entering the rtrv-slk command with the card location shown in 1. 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 A    lsn1         13 LIME1    1    56000  BASIC ---  ----- 1201 2    25
   

3. Check the status of the signaling links shown in 2 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=a

   rlghncxa03w 09-05-23 13:06:25 GMT EAGLE5 41.0.0
   SLK     LSN       CLLI        PST          SST       AST
   1201,A  lsn1      ----------- IS-NR        Avail     ----
     ALARM STATUS       = No Alarms
     UNAVAIL REASON     = --
     E1 status          = 1201, RCVRY-E1F:FAC-E1 Port 2 available
   

   If all the signaling links shown in this step are out of service, continue the procedure with 5.

   If any of the signaling links shown in this step are in service, continue the procedure with 4.

4. Deactivate the signaling links shown in 3 using the dact-slk command.

   For this example, enter this command.

   dact-slk:loc=1201:link=a

5. Change the E1 port using the chg-e1 command and the parameter combinations shown in Table A-14.

   Table A-14 Unchannelized E1 Port Parameter Combinations

   Mandatory Parameters

   :loc=location of the E1 card

   :e1port=E1 port being changed, either 1, 2, 3, 4, 5, 6, 7, or 8

   Optional Parameters

   :cas=off

   :crc4=on, off

   :encode=ami, hdb3

   :si=0 - 3

   :sn=0 - 31

   :e1tsel=line, external

   :minsurate=500 - 2000

   For this example, enter this command.

   chg-e1:loc=1201:e1port=2:crc4=off:encode=hdb3:si=1:sn=9

6. Verify the changes using the rtrv-e1 command specifying the card location and the e1port value specified in 5.

   For this example, enter these commands.

   rtrv-e1:loc=1201:e1port=2

   rlghncxa03w 09-05-28 09:12:36 GMT EAGLE5 41.0.0
   
         E1                                                   LINK    MINSU
   LOC   PORT  CRC4  CAS  ENCODE  E1TSEL    SI  SN  CHANBRDG  CLASS   RATE
   1201  2     OFF   ---  HDB3    EXTERNAL  1   9   ------    UNCHAN  1300
   

   If the signaling links were not deactivated in 4, continue the procedure with 8.

   If the signaling links were deactivated in 4, continue the procedure with 7.

7. Activate the signaling links that were deactivated in 4 using the act-slk command.

   For this example, enter this command.

   act-slk:loc=1201:link=a

8. 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 A-11 Changing the Attributes of an Unchannelized E1 Port

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