Voice Gateway Channels
IP phones need access to the PBX TDM circuitry, they do this through a DSP on a Media Gateway card - a "Voice GateWay" channel.
An MC32 card, running IP Line software, is known as a VGMC. It has 32 DSP ports. Each shelf requires a VGMC, usually in slot 7.
Make sure there's a ZONE configured for VGMC's in LD 117 (PRT ZONE), the zone intent (ZBRN) is MO. Never use Zone 0!
Use LD 14 to configure the physical TN's for the Voice Gateway Media card (VGMC):
|REQ||NEW, CHG, OUT||Create, change, delete Voice Gateway channels on a card|
|TN||l s c u||The physical TN: loop, shelf, card, unit|
|XTRK||MC32||MC32 - 32 port media card / MC32S - ITG PM 32 port card|
|ZONE||x||A zone previously built in LD 117, with ZBRN: MO|
First TN is unit 0, last TN is unit 31. You can build all 32 at once: NEW 32. VGW's can be STATed in LD 32.
In Element Manager:
- Click: IP Network ► Nodes: Servers, Media Cards
- Expand the NODE by clicking the plus sign (+) to the left of the node
- Click VGW Channels next to the card to be configured
- Click the Add button at the top of the VGW Channels window
- Fill in the fields as in LD 14, you can build 32 at once.
- Click Submit, if successful a summary is displayed:
VGW channels are special trunks, they do not require a route.
Voice Gateway Channel Status:
Check the card/channel status with
stat in LD 32:
.stat 1 0 0 00 = UNIT 00 = IDLE (TRK)(IPTN REG ) ◄ IPTN Registered 01 = UNIT 01 = IDLE (TRK)(IPTN REG ) 02 = UNIT 02 = IDLE (TRK)(IPTN REG ) 03 = UNIT 03 = IDLE (TRK)(IPTN REG ) 04 = UNIT 04 = IDLE (TRK)(IPTN REG ) 05 = UNIT 05 = IDLE (TRK)(IPTN REG ) 06 = UNIT 06 = IDLE (TRK)(IPTN REG ) :
Note: With G.723, every 4th channel is unregistered. This is normal.
You can also confirm the VGMC registration status with
stat serv in LD 117:
=> stat serv NODE HOSTNAME ELANIP LDR SRV APPS PBXLINK PBXLINK PBXLINK CONNECTID ID STATE DATE TIME 1015 pbxbook 10.10.10.15 YES SS LTPS LINK UP 06/01/2096 08:46:21 200c3940 VTRK Sets: [reg - 00000] [busy - 00000] VTRK: [reg - 00000] [busy - 00000] SIGNALLING SERVER CAPACITY (SSRC): 2048 1015 VGW 10.10.10.51 NO SMC LTPS LINK UP 06/01/2096 08:54:19 200c3840 ◄ VGMC Sets: [reg - 00000] [busy - 00000] VGWs: [reg - 00032] [busy - 00000]