- Enterasys Security Router User's Guide

ISDN Configuration
XSR User’s Guide 11-9
Decoded IEs
Only IEs referring to data calls are supported and decoded by the XSR, as shown in the following
examples. Those IEs used for voice calls and supplementary services are not applicable.
• Called party number:
70 Called number N0:2500
• Calling party number:
6C Calling number N0:2800
• Cause:
08 Cause 8090 Normal clearing.
Refer to “ISDN (ITU Standard Q.931) Call Status Cause Codes” on page 11-16 for a list of all
supported cause codes.
BRI NI-1, DMS100 & 5ESS SPID Registration
For registration purposes, Q931 “dummy” messages (with call reference number 0) are supported,
as shown in the following example:
Tx ISDN-BRI 1/0 03:33:39:603 CallRef=Dummy INFO
00 81 00 00 08 00 7B 3A 07 32 38 30 30 35 35 35
3A Service Profile ID 32383030353535
Rx ISDN-BRI 1/0 03:33:39:688 CallRef=Dummy INFO
02 81 00 02 08 00 7B 3B 02 8F B7
3B End Point Identifier 8FB7
Terminal Endpoint Identifier (TEI) Management Procedures
TEI management frames display as UI frames as illustrated in the following examples:
Rx ISDN-BRI 1/0 04:01:16:242 Q921 UI p 0 sapi 63 tei 127 c/r 1
info:0F 00 00 06 FF
#
Tx ISDN-BRI 1/0 04:01:21:091 Q921 UI p 0 sapi 63 tei 127 c/r 0
info:0F 42 56 01 FF
ISDN Configuration
PRI interfaces share the T1/E1 NIM card and all physical configuration values the controller can
configure. The
pri-group command assigns the channels (DS0s) of the T1/E1 port to ISDN
module control. Interfaces are configured one of two ways using the following commands:
•The
pri-group command ISDN switching.
0x75 STATUS ENQ 0x7E User-user
0xFF UNKNOWN 0x7F escape for extension
Table 11-1 Q931 Decoding
Message # Message Type IE # Information Element