Network side not supported on VG200??

[j.riley]

Hi everyone;

I'm trying to implement a VG200 (NM-HDV) PRI interface with Nortel Meridian. Running MGCP with IOS 12.2(11)T. Although we are just finding out that this no longer supports network side (Providing clocking) to the PBX? Unfortunately this is a major "ouch" since the PBX cannot be set as network side or to provide clocking. As well, the PBX does not have the load installed to support the NI protocol.

Are there any work arounds that are out there? Or IOS versions on the VG200 that supports this basic feature?

Thanks in advance.

John.

[thusain]

Network side emulation of the isdn switch are not supported on primary-5ess, dms-100 or primary-4ess switch types. There is no IOS version that this is supported in either. The only switch type that supports network side is ni/ni2. There is however a work around. There is a hidden command "isdn network" under the d channel, that can enable network type emulation, however when the router is reloaded the configuration will dissapear. The reason this command is not released or supported, is because the resources have not been put into testing this throughly enough to be integrated as a feature in IOS.

However this is just network side emulation of the switch, you can still proivde clocking to the PBX with clock source internal under the T1 controller.

[j.riley]

Thanks for your help guys. Although, I'm still running into an issue with this, and I'm told that it should be working the way I have it.

The Option 11 is configured for User side, External Clocking, and DMS100.

The VG200 is set for NI2, Internal Clocking, and Network side.

I'm bringing up the D-Channel, although when I place a call, it 'seems' as if the B-Channel is either not being setup, or being setup breifly then torn down immediately. (Phone goes on-hook right away).

The debug from the PBX states:

PRI227 DCH: 15 DATA: 00000004 CALLING #: 1003 NUM PLAN: E164

CALLED #: 8000 NUM LAN: E164

Which shows all good data coming from the D-Channel.

Here's the VG200 config:

------------------------------

version 12.2

no parser cache

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname XXXXX

!

logging buffered 4096 debugging

no logging console

enable password happy

!

voice-card 1

!

ip subnet-zero

!

isdn switch-type primary-dms100

!

voice call carrier capacity active

voice rtp send-recv

!

voice service voip

!

ccm-manager redundant-host x.x.x.x x.x.x.x

ccm-manager mgcp

ccm-manager music-on-hold

ccm-manager config server x.x.x.x

ccm-manager config

!

controller T1 1/0

framing esf

clock source internal

linecode b8zs

cablelength short 133

pri-group timeslots 1-24 service mgcp

description MacMillan PSTN Facing PRI

!

controller T1 1/1

framing esf

clock source internal

linecode b8zs

cablelength short 133

pri-group timeslots 1-24 service mgcp

description MacMillan PSTN Facing PRI

!

!

interface FastEthernet0/0

description Plug into Voice VLAN 110 at Bloorview

ip address x.x.x.x x.x.x.x

duplex auto

speed auto

!

interface Serial1/0:23

no ip address

no logging event link-status

isdn switch-type primary-ni

isdn protocol-emulate network

isdn incoming-voice voice

isdn flip-chan-flag

isdn bind-l3 ccm-manager

no cdp enable

!

interface Serial1/1:23

no ip address

no logging event link-status

isdn switch-type primary-ni

isdn protocol-emulate network

isdn incoming-voice voice

isdn flip-chan-flag

isdn bind-l3 ccm-manager

no cdp enable

!

ip classless

no ip http server

!

!

logging trap debugging

call rsvp-sync

!

voice-port 1/0:23

!

voice-port 1/1:23

!

mgcp

mgcp call-agent x.x.x.x 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp package-capability rtp-package

mgcp package-capability sst-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

!

mgcp profile default

!

dial-peer voice 1 pots

application mgcpapp

!

dial-peer voice 1023 pots

application mgcpapp

!

dial-peer voice 9991023 pots

application mgcpapp

port 1/0:23

!

dial-peer voice 9991123 pots

application mgcpapp

port 1/1:23

---------------------

Again, any help is greatly appreciated.

Thanks

John.

[dweiner]

Here is a config that has worked in many many locations.

-----------------------------

On the IOS gateway:

-----------------------------

isdn switch-type primary-dms100

controller T1 1/0

framing esf

clock source line primary

linecode b8zs

pri-group timeslots 1-24

!

!

interface Serial1/0:23

isdn switch-type primary-dms100

isdn incoming-voice voice

isdn flip-chan-flag

!

!If on earlier version of IOS (12.1.x) use next

isdn tei-negotiation first-call

!

--------------------------------------------

On the Nortel Meridian Option X

1) Meridian 81c using NI2 Network side will only process the last 4-5 digits of any number, so tandeming to the PSTN is not possible (in fact, if the last 4-5 digits of the number sent out match a PBX phone extension that phone will ring).

2) Set Meridian PRI to S100 Network side if software allows. Successful integrations seem to be running version 22 or later on the Meridian.

3) Must set "S100" on the trunk group (RDB) and on the D-channel config. They can then set the PBX for network side.

4) Set VG200 for DMS100 User side. Caller name should work with IOS 12.2(5)

5) Make sure PBX tech downloads MSDL channel if D channel does not come up.

6) PBX tech will also have to make sure correct parameters are set to pass calls from his PRI to CallManager to PRI on PSTN (NCOS, TGAR, others)

-----------------------------

Here is some pertinent config info from a Meridian PBX that is

working with the above PRI config:

On the D-Channel:

CTYP MSDL

GRP 1

DNUM 15

PORT 2

USR PRI

DCHL 25

OTBF 128

PARM RS422 DTE

CLOK EXT

IFC S100

SIDE NET

CNEG 1

RLS ID **

RCAP ND2

On a trunk (ds0)

TYPE TIE

CDEN SD

CUST 0

TRK PRI

PDCA 1

PCML MU

NCOS 2 <<< Depends on permissions in switch

RTMB 79 1

B-CHANNEL SIGNALING

TGAR 1 <<< Routing code. Could be different.

AST NO

IAPG 0

CLS CTD DTN and so on <<< Maybe should be UNR not CTD?

TKID

FCAR NO

On the trunk route:

TKTP TIE

ESN NO

CNVT NO

SAT NO

RCLS EXT

DTRK YES

DGTP PRI

ISDN YES

MODE PRA

IFC S100

SBN 0

PNI 00000

NCNA YES

NCRD NO <<<< Depends whether NO or YES

CHTY BCH

CTYP UKWN

INAC NO

ISAR NO

DARC NO

BCOT 0

DSEL 3VCE <<< also works as VOD

PTYP PRI

AUTO NO

DNIS NO

ICOG IAO

SRCH RRB <<< Can be set to LIN (linear hunt)

TRMB YES

STEP

ACOD 7979

TCPP NO

TARG 01

CLEN 1

BILN NO

OABS

INST

IDC NO

DCNO 0 *

NDNO 0

DEXT NO

ANTK

SIGO STD

ICIS YES

and so on ......