Making switch connections for NMS ISDN

To enable an application access to ISDN channels, several switch connections must be made. In the board keyword file, if Clocking.HBus.ClockMode is set to StandAlone, these settings are automatically made when the board boots.

If Clocking.HBus.ClockMode is set to any other value, the application must set these values using the NMS Switching service or swish utility. The application must make the following connections:

The connections differ depending upon whether the NetworkInterface.T1E1.SignalingType keyword is set to PRI or RAW. Specifically, if NetworkInterface.T1E1.SignalingType=RAW, no connections are made between the HDLC controller and signaling streams. This setting is for trunks that are included in NFAS groups and do not have a D channel in operation. For more information about these keywords and about NFAS, see the NMS ISDN Installation Manual.

Connections are listed in MVIP-95 nomenclature unless otherwise specified.

Note: On CG boards, the framer signaling is hard wired to the HDLCs. Any attempt to switch framer signaling to the HDLCs will fail.

The following table shows the default connections. The exact settings depend upon the NetworkInterface.T1E1.SignalingType keyword setting. The connections are full duplex.

Board Setting Default connections

Four-trunk T1 board
(for example, CG 6060)

PRI

Trunk 1: 0:0..22 => 65:0..22        64:0..22 => 1:0..22

Trunk 2: 4:0..22 => 65:24..46      64:24..46 => 5:0..22

Trunk 3: 8:0..22 => 65:48..70      64:48..70 => 9:0..22

Trunk 4: 12:0..22 => 65:72..94    64:72..94 => 13:0..22

Four trunk T1 board
(for example, CG 6060)

RAW

Trunk 1: 0:0..23 => 65:0..23        64:0..23 => 1:0..23

Trunk 2: 4:0..23 => 65:24..47      64:24..47 => 5:0..23

Trunk 3: 8:0..23 => 65:48..71      64:48..71 => 9:0..23

Trunk 4: 12:0..23 => 65:72..95    64:72..95 => 13:0..23

Four trunk E1 board
(for example, CG 6060)

PRI

Trunk 1: 0:0..29 => 65:0..29        64:0..29 => 1:0..29

Trunk 2: 4:0..29 => 65:30..59      64:30..59 => 5:0..29

Trunk 3: 8:0..29 => 65:60..89      64:60..89 => 9:0..29

Trunk 4: 12:0..29 => 65:90..119  64:90..119 => 13:0..29

Four trunk E1 board
(for example, CG 6060)

RAW

Trunk 1: 0:0..30 => 65:0..30        64:0..30 => 1:0..30

Trunk 2: 4:0..30 => 65:31...61     64:31..61 => 5:0..30

Trunk 3: 8:0..30 => 65:62..92      64:62..92 => 9:0..30

Trunk 4: 12:0..30 => 65:93..123  64:93..123 => 13:0..30