Mike's PBX Cookbook

Add a Media Gateway

Task Check list:

1.Add an MGC Superloop 2.Configure the hardware 3.Add the TLAN addresses
4.Add the VGW (DSP)
Channels
5.Add the Digitone Receivers
(DTR's)
6.Add Conference and Tone
(CONF/TDS) loops

You will need to know:

  1. The sites IP scheme and Gateway address & zone
  2. Common Equipment data, printed in LD 22: PRT, CEQU
  3. Installed media gateways, printed in LD 117: PRT IPMG

Steps in detail:

1Define a new Media Gateway (MGC) in LD 97 (can also be achieved in Element Manager):

REQ  CHG        (CHG or PRT the SUPL data block)
TYPE SUPL
SUPL 0          (we will define superloop 0)
SLOT 
SUPT IPMG       (superloop type is an IP Media Gateway)
IPR0 10.11.1.52 (ELAN address for shelf 0, MGC must be set to this address)
 IPMG_TYP0 MGC  (type = (MGC), MGX, or MGS)
 ZONE0 1        (never use zone 0, zone intent must be MO for Media Gateways)
 **** ALL VWG CHANNELS MUST BE OUTED AND RECONFIGURED AFTER IPMG ZONE CHANGE
 DES0           (enter through this...)
 -CE 
 -1E 
 -E  
 -CT 
 -2T 
 -T  
IPR1 10.11.1.53 (hit enter if not applicable, otherwise continue with shelf 1)
 IPMG_TYP1 MGC  (if MGC, this is an additional card, if MGX, this is the RHS)
 ZONE1 1
 **** ALL VWG CHANNELS MUST BE OUTED AND RECONFIGURED AFTER IPMG ZONE CHANGE
 DES1  
 -CE 
 -1E 
 -E  
 -CT 
 -2T 
 -T  
WRAP UP SUPL 004 ..OK
 
RESTART IPMG 000  0 / 000  1 TO ALLOW CHANGES TO TAKE EFFECT.

2Configure the MGC and Gateway hardware:

  1. The MGC must be fitted with DSP daughter boards.
  2. The Media Gateway, and Call Server IP addresses must be set in the MGC.
See: MGC Card Settings, and MGC DSP daughterboards

NOTE: Access to Element Manager is necessary to complete the TLAN and DSP (VGW) IP configuration. Element Manager stores the full MGC configuration in mgcdb.xml which is then transfered to the card (via SFTP) upon ELAN registration.

3Configure the remaining IP addresses in Element Manager:

  1. Configure the ELAN Gateway and Subnet mask
  2. Configure the TLAN IP addresses (shown in red).
    Note, the TLAN Sub-mask defaults to .253 - this must probably be changed.
  3. Configure the DSP IP address(s) for the DSP hardware fitted (shown in red).
    Select the DSP daughter board size form the drop down box.

4Configure the VGW Channels:

From the IP address page, click VGW Channels.
Build VGW's on appropriate card slots to match the hardware:

DB2 - card slot 0 (9, and 10).
DB1 - card slot 11 (12, 13, and 14 for 128 port DSP's).

Remember, TN 0-0-0-0 is invalid (although it's accepted).
Always start at TN 0-0-0-1, sacrificing unit 1 on slot 0.

5Configure the Digitone Receivers:

Build 8 DTR's (on a virtual MGC card slot, eg, 15) for each MGC.

This can also be done in LD 13: REQ: new 8, TYPE: dtr, TN l s c u
Print DTR's in LD 20, STAT them in LD 32.

See MGC DSP daughterboards for more detail.

Don't forget the Digitone Receivers! Sets and tie-trunks will not be able to break dial-tone without them!

6Configure the CONF and TDS loops (follow the scheme in CEQU):

CONF Loop 101, 102, etc.
TDS Loop 151, 152, etc.

LD 17: CHG CEQU
Enter down to - MGTDS / MGCONF and add a new loop.
Enter IPMG (IP Media Gateway) loop and shelf when prompted.

Every MGC needs Conference and TDS loops, don't forget them!
Print the STATus in LD 38 (MGCONF) and LD 34 (MGTDS).

Media Gateway Status:

Make sure the network connections are linked-up, the following messages should display:

ELAN014 ELAN 0 host IP=10.11.1.52 is enabled
SRPT226 Registration has been granted for IP[110.11.1.52] IPMG[0 0] 

From Release 7.5, Media Gateways must register with both Call Server and Secure Domain. To register an MGC with the Secure Domain (if applicable), use the LD 117 command: reg ucm dev <ip-address>. See Check Registered Elements.

MGC status is displayed in LD 117:

=> stat ipmg
                                  LAST REG     LAST REG
IPMG     TYPE       STATUS          DATE         TIME         UPTIME
000 0     MGC           REG     28/10/2013       17:27        0d,0h,1m 
000 1     MGC           REG     28/10/2013       17:27        0d,0h,1m 

MGC type and ELAN IP address is displayed in LD 117:

=> prt ipmg
 IPMG               IP Address          Zone   Type 
000 0               10.11.1.52          1      MGC  
000 1               10.11.1.53          1      MGC  

DSP Status:

DSP daughterboard status information is accessible from the CLI with Load 32.
The following example reflects a 32 port DSP in the DB2 position, no DSP in DB1, and 8 DTR's.

REQ: stat 0 0 0
00 = UNIT 00 = UNEQ  (TN 0 0 0 0 is invalid, and must be unequipped)
01 = UNIT 01 = IDLE            (TRK)(IPTN REG    )
02 = UNIT 02 = IDLE            (TRK)(IPTN REG    )
:
31 = UNIT 31 = IDLE            (TRK)(IPTN REG    )

REQ: stat 0 0 11
CARD 11 UNEQ 
CARD 12 UNEQ 
CARD 13 UNEQ 
 
REQ: stat 0 0 15
00 = IDLE  (DTR)
01 = IDLE  (DTR)
02 = IDLE  (DTR)
03 = IDLE  (DTR)
04 = IDLE  (DTR)
05 = IDLE  (DTR)
06 = IDLE  (DTR)
07 = IDLE  (DTR)

If the MGC is off-line, or there's a configuration mismatch, the DSP's will be disabled and unregistered:

REQ: stat 0 0 0
00 = UNIT 00 = UNEQ 
01 = UNIT 01 = DSBL            (TRK)(IPTN UNREG  )
02 = UNIT 02 = DSBL            (TRK)(IPTN UNREG  )
:
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