Version 6.6 483 October 2014
Installation & Operation Manual 38. Configuring the PSTN Subsystem
38.6.3.4 Advanced Configuration
Additional parameters and timers of MTP2 signaling links may be configured via
MTP2 Profile. The default MTP2 Profile contains all default settings as specified in the
ITU standard. In a typical configuration, all SS7 Data Links are attached to the same
MTP2 Profile.
You can create additional MTP2 Profiles and attach them to specific SS7 Data Links.
Or, alternatively, you can modify the existing MTP2 Profile configuration.
Table
38-11: MTP2 Profile Properties
Parameter
Name
Type
Provisioning
Type
Description
MTP2 Profile
Name
String
Up to 20 chars.
Online Defines the name of the MTP2 Profile,
enabling user to easily identify it.
SS7 MTP-2
Link Rate
Enum
D56kbps(56),
A64kbps(64)
Online Defines the MTP2 Link Rate.
Error
Correction
Method
Enum
Basic(0), PCRC(1)
Online Defines the error correction method –
Basic or Preventive Cyclic
Retransmission. Refer to ITU-T Q.703
for details.
SUERM
Threshold (T)
Integer
0 – 255
Online Defines the Signal Unit Error Rate
Monitor (SUERM) Threshold (T) – the
number of consecutive signal units
received in error that will cause an error
rate high indication.
Refer to ITU-T Q.703 for details.
Lowest SU
Error Rate
(D)
Integer
0 – 256
Online Defines the D, where the lowest signal
unit error rate - which is 1/D (signal unit
errors/signal unit) - will ultimately cause
an error rate high indication. Refer to
ITU-T Q.703 for details.
# Octets
Received (N)
Integer
0 – 256
Online Defines the number of octets received
while in octet counting mode. Refer to
ITU-T Q.703 for details.
Norm ER
Threshold
(Tin)
Integer
0 – 20
Online Defines the Normal ER Threshold (Tin) -
that a specific proving period is aborted.
Refer to ITU-T Q.703 for details.
Emergency
ER
Threshold
(Tie)
Integer
0 – 10
Online Defines the Emergency Threshold (Tie) -
that a specific proving period is aborted.
Refer to ITU-T Q.703 for details.
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