ISDN-PLK (ISDN-PRI Signaling Link Port)
Issue 1 May 2002
8-965
555-233-143
ISDN-PLK (ISDN-PRI Signaling Link
Port)
NOTE:
This MO was formerly known as "ISDN-LNK (ISDN-PRI Signaling Link
Port)".
The ISDN-PRI interface uses out-of-band signaling (as opposed to robbed-bit,
in-band signaling) to transmit control messages between two endpoints. User
information channels carry digitized voice and digital data and are known as
bearer channels (B channels). B channels are assigned to DS1 ISDN trunks or
PRI endpoints. Call-control signaling for the B channels is combined and carried
over the separate ISDN-PRI Signaling Link Port D channel.
The ISDN-PRI Signaling Link Port (ISDN-LNK) is a port on a TN464C/D UDS1
Interface circuit pack that has a direct interface to the packet bus that carries
D-channel messages to the processor. The associated B channels can use ports
on the same circuit pack or ports on other TN464C/Ds or TN767 DS1 Interface
circuit packs. (The TN722 cannot be used for this application). The B channels
are connected to the TDM Bus.
Two types of DS1 interfaces exist:
■
24 DS0 channels on a 1.544-Mbps link
■
31 DS0 ch 1 framing channel on a 2.048-Mbps link
On 24-channel interfaces, the B channels may use any of the first 23 ports. The
signaling link is assigned to the 24
th
port. On 32-channel interfaces, the DS1
ISDN Trunks (B channels) may use any of ports 1 to 15 and 17 through 31. The
signaling link is assigned to the 16
th
port. The 32
nd
channel (port 0) is used for
framing. In NFAS configurations, the 24
th
or 16
th
ports on some of the DS1 circuit
packs may be used for B channels. Refer to ISDN-SGR for further information.
MO’s Name (in
Alarm Log)
Alarm
Level
Initial Command to Run
1
1.
pp is 24 for 24-channel interfaces and 16 for 32-channel interfaces>
Full Name of MO
ISDN-LNK
2
2.
For additional related information, see
‘‘UDS1-BD (UDS1 Interface Circuit Pack)’’
MINOR
test port UUCSSpp l
ISDN-PRI Signaling Link port
ISDN-LNK
WARNING
test port UUCSSpp sh
ISDN-PRI Signaling Link port
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...