Link Configuration Mode Commands

Mode

The Link configuration mode defines the MTP3 link parameters for a specific link in a linkset of an SS7 routing domain instance.

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt:

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#
Important:

The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).

arbitration

This command configures link arbitration.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

arbitration { active | passive }
no arbitration

no

Removes the arbitration configuration for the link.

active

The SSCOP initiates the transmission of PDUs.

passive

The SSCOP waits to receive PDUs.

Usage Guidelines

Sets the configuration to initiate transmission of PDUs.

Examples

arbitration active

end

Exits the current configuration mode and returns to the Exec mode.

Product

All

Privilege

Security Administrator, Administrator

Syntax

Syntax Description

end

Usage Guidelines

Use this command to return to the Exec mode.

exit

Exits the current mode and returns to the parent configuration mode.

Product

All

Privilege

Security Administrator, Administrator

Syntax

Syntax Description

exit

Usage Guidelines

Use this command to return to the parent configuration mode.

mtp2-aerm-emergency-threshold

Configure the alignment error rate monitor (AERM) emergency threshold value. This command is only available for a lowspeed-narrowband link-type.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-aerm-emergency-threshold value
default mtp2-aerm-emergency-threshold

default

Resets the parameter to the default value of 1.

value

value : Enter an integer from 1 to 50. Default: 1.

Usage Guidelines

This command sets the emergency threshold for the MTP2 alignment error rate monitor.

Examples

Set the emergency AERM threshold to 17: 
mtp2-aerm-emergency-threshold 17

mtp2-aerm-normal-threshold

Configure the alignment error rate monitor (AERM) normal threshold value. This command is only available for a lowspeed-narrowband link-type.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-aerm-normal-threshold value
default mtp2-aerm-normal-threshold

default

Resets the parameter to the default value of 4.

value

value : Enter an integer from 4 to 100. Default: 4.

Usage Guidelines

This command sets the normal threshold for the MTP2 alignment error rate monitor.

Examples

Set the normal AERM threshold to 55: 
mtp2-aerm-normal-threshold 55

mtp2-eim-decrement

Configure the errored interval monitor (EIM) emergency decrement value. This command is only available for a highspeed-narrowband link-type.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-eim-decrement value
default mtp2-eim-decrement

default

Resets the parameter to the default value of 11.

value

value : Enter an integer from 1 to 63. Default: 11.

Usage Guidelines

This command sets the emergency decrement value for the EIM.

Examples

Reset the EIM emergency decrement to 1: 
default mtp2-eim-decrement

mtp2-eim-increment

Configure the errored interval monitor (EIM) emergency increment value. This command is only available for a highspeed-narrowband link-type.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-eim-increment value
default mtp2-eim-increment

default

Resets the parameter to the default value of 198.

value

value : Enter an integer from 1 to 1023. Default: 198.

Usage Guidelines

This command sets the emergency increment value for the EIM.

Examples

Set the EIM emergency increment to 2: 
 mtp2-eim-increment 2

mtp2-eim-threshold

Configure the errored interval monitor (EIM) emergency threshold value. This command is only available for a highspeed-narrowband link-type.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-eim-threshold value
default mtp2-eim-threshold

default

Resets the parameter to the default value of 794.

value

value : Enter an integer from 1 to 65535. Default: 794.

Usage Guidelines

This command sets the emergency threshold value for the EIM.

Examples

Set the EIM emergency threshold to 154: 
 mtp2-eim-threshold 154

mtp2-error-correction

Configure the error correction method to be used. This command is only available for lowspeed or highspeed narrowband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-error-correction { basic | preventive-cyclic-retransmission } 
default mtp2-error-correction

default

Resets the parameter to the default value.

basic

Basic error correction (BEC) is a positive / negative acknowledgement method that uses backwards retransmission. This method is best for links with less than 30 ms one-way propagation delays.

preventtive-cyclic-retransmission

PCR is recommended for links with 125 ms, or higher, propagation delays.

Usage Guidelines

Set the method of MTP2 layer error correct to be used on the link.

Examples

Set error correction for a link with 15 ms propagaion delay:: 
 mtp2-error-correction basic

mtp2-lssu-len

This command sets the length of the link status signal unit (LSSU) which carries link status information used to manage link alignment and indicate the status of the signaling points to each other. This command is only available for lowspeed or highspeed narrowband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-lssu-len #_octets
default mtp2-lssu-len

default

Using this keyword with the command resets the length to the default of 1 octet.

#_octets

Sets the number of octets for the length of the LSSU.

#_octets: Must be either 1 or 2.

Usage Guidelines

Use this command to define the maximum amount of link status information that is to be shared between signaling points.

Examples

You can use the following command to set the LSSU length to 2 octets - the maximum length: 
mtp2-lssu-len 2

mtp2-max-outstand-frames

This command sets the maximum number of outstanding packets to be sent by the link manager (linkmgr) - applicable for both high speed (HSL) and low speed (LSL) narrowband links.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-max-outstand-frames #_bytes
default mtp2-max-outstand-frames

default

Using this keyword with the command resets number of packets to the default of 7 bytes.

#_bytes

Sets the maximum number of packets sent by the linkmgr that can be allowed to be outsanding.

#_bytes: Must be an integer from 5 to 10.

Usage Guidelines

The linkmgr (MTP2) sends data at a higher rate, than the narrowband (NB) E1 link speed, when in congestion and performing retransmission. This can lead to more congestion leading to more time taken for the link to come out of congestion. If using a value of 10 during congestion, then linkmgr pumps data at a rate higher than 2.5 mbps. To avoid this problem, a lower value is usually considered optimal. This configuration holds good for both HSL and LSL.

Examples

Use the following command to reset the default number of outstanding packets sent by the LinkMgr: 
default mtp2-max-outstand-frames
Set the maximum number of oustanding packets the linkmgr can send to 6: 
mtp2-max-outstand-frames 6

mtp2-suerm-threshold

Configure the signal unit error rate monitor (SUERM) threshold. This command is only available for lowspeed-narrowband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp2-suerm-threshold value 
default mtp2-suerm-threshold

default

Resets the parameter to the default value.

value

Defines the threshold for number of bad frames

value: Enter an integer from 64 to 1023. Default is 64.

Usage Guidelines

Sets the threshold for link monitoring of bad frames.

Examples

Set a new link monitoring bad frames (SEURM) threshold of 256: 
 mtp2-suerm-threshold 256

mtp3-discard-priority

Configure MTP3 message discard priority.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-discard-priority priority
default mtp3-discard-priority

default

Resets the priority to the default value.

priority

priority: must be an integer between 0 and 3.

Default is 0.

Usage Guidelines

Use this command to manage MTP3 messaging.

Examples

mtp3-discard-priority 2

mtp3-max-slt-try

Configure maximum number of times to retry SLT (signaling link test).

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-max-slt-try retries
default mtp3-max-slt-try

default

Resets the number of retries to the default value.

retries

retries: must be an integer between 1 to 65535.

Default is 10.

Usage Guidelines

Use this command to troubleshoot MTP3 link mismatch.

Examples

mtp3-max-slt-try 35

mtp3-msg-priority

Configures the priority for sending MTP3 management messages.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-msg-priority priority
default mtp3-msg-priority

default

Resets the number of priority to the default value.

priority

priority: must be an integer from 0 to 3.

Default: 0

Usage Guidelines

Use this command to set the priority for sending MTP3 management messages.

Examples

Use the following to set the message priority to 3: 
mtp3-msg-priority 3

mtp3-msg-size

Configures the size of messages from layer 3 to layer 2.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-msg-size size
default mtp3-msg-size

default

Resets the the size to the default value which is 4096 (for q.2140) or 272 (for MTP2)

size

size: must be an integer from 1 to 272 for high-speed or low-speed narrowband SS7 links.

size: must be an integer from 1 to 4096 for ATM broadband links.

Usage Guidelines

Use this command to set the maximum message size, in bytes.

Examples

Use this command to set the MTP3 message size to 4096 bytes: 
mtp3-msg-size 4096

mtp3-p1-qlen

Configure the size for the MTP3 p1 queue length.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-p1-qlen size
default mtp3-p1-qlen

default

Resets the number of size of the priority 1 queue to the default value.

size

size: integer from 1 to 65535. Size should be less than MTP3 p2 qlen and p3 qlen.

Default: 1024

Usage Guidelines

Use this command to configure the queue length threshold for raising the congestion priority to level 1.

Examples

Use this command to set the queue length priority to 128: 
mtp3-p1-qlen 128

mtp3-p2-qlen

Configure the size of the priority 2 queue.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-p2-qlen size
default mtp3-p2-qlen

default

Resets the number of size of the priority 2 queue to the default value.

size

size: integer from 1 to 65535. Size should be less than MTP3 p3 qlen and greater than p1 qlen.

Default: 1024

Usage Guidelines

Use this command to configure the queue length threshold for raising the congestion priority to level 2.

Examples

Use this command to set the queue length threshold to 256: 
mtp3-p2-qlen 256

mtp3-p3-qlen

Configure the size of the priority 3 queue.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-p3-qlen size
default mtp3-p3-qlen

default

Resets the number of size of the priority 3 queue to the default value.

size

size: integer from 1 to 65535. Size should be greater than MTP3 p1 qlen and p2 qlen .

Default: 1024

Usage Guidelines

Use this command to configure the queue length threshold for raising the congestion priority to level 3.

Examples

mtp3-p3-qlen 1024

mtp3-test-pattern

Configures the character string for the test message.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

mtp3-test-pattern pattern
default mtp3-test-pattern

default

Resets the pattern to the default value.

pattern

pattern: 1 to 15 alphanumeric characters.

Default: SGSN-ORIGINATED

Usage Guidelines

Use this command to define a test pattern string for the signalling link test match (SLTM).

Examples

mtp3-test-pattern TEST1-HomeOffice

priority

Configures the MTP3 Link Priority.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

priority pri_value
no priority

no

Removes the priority configuration.

pri_value

pri_value: 0 represents highest priority and 15 represents the lowest priority.

Usage Guidelines

Use this command to configure the link priority within the MTP3 link set.

Examples

priority 2

signaling-link-code

Configures the signaling link code (SLC).

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

signaling-link-code code
no signaling-link-code

no

Removes the SLC configuration.

code

code: integer from 0 to 15.

Usage Guidelines

Use this command to uniquely identify the signaling link to be used for MTP3 management messages.

Examples

signaling-link-code 4

sscf-nni-n1

Configures the SSCF NNI N1. This command is only available for ATM-broadband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

sscf-nni-n1 value
no sscf-nni-n1

default

Removes the sscf-nni-n1 configuration.

value

value: integer from 1 to 65535.

Default: 1000

Usage Guidelines

Use this command to identify the network-to-node interface (NNI) between the MTP3 and SSCOP layers.

Examples

sscf-nni-n1 4064

sscop-max-cc

Configure the maximum value for the SSCOP connection control (CC) state variable. his command is only available for ATM-broadband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

sscop-max-cc value
no sscop-max-cc

default

Removes the sscop-max-cc configuration.

value

value: integer from 1 to 65535.

Default: 4

Usage Guidelines

Use this command as part of the configuration responsible for managing the SSCOP connection. This command sets the number of times retries.

Examples

sscop-max-cc 256

sscop-max-pd

Configures the maximum acceptable value for the SSCOP state variable VT(PD). his command is only available for ATM-broadband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

sscop-max-pd value
no sscop-max-pd

default

Removes the sscop-max-pd configuration.

value

value: integer from 1 to 65535.

Default: 500

Usage Guidelines

Use this command to define the maximum number of data PDUs transmitted between POLL PDUs.

Examples

sscop-max-pd 2500

sscop-max-stat

Configures the maximum number of elements included in a status PDU. his command is only available for ATM-broadband link-types.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

sscop-max-stat value
no sscop-max-stat

default

Removes the sscop-max-stat configuration.

value

value: integer from 3 to 65535. This parameter should be an odd integer greater than or equal to 3.

Defaultz; 67

Usage Guidelines

Received in response to a POLL PDU, the STAT PDU includes information about the number of SD PDUs that have been received.

Examples

sscop-max-stat 56000

timeout

This command enables configuration of an array of signaling and flow control timers - for MTP, SSCF, and SSCOP.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SS7 Routing Domain Configuration > Linkset Configuration > Link Configuration

configure > ss7-routing-domain domain_id variant var_type > linkset id linkset_id > link id link_id

Entering the above command sequence results in the following prompt: 

[local]host_name(config-ss7-rd-linkset-linkset_id-link-link_id)#

Syntax

Syntax Description

[ no ] timeout timer timer_value

no

Adding no to the timeout command removes the timer configuration.

timer timer_value

Select the timer and enter a value from the range.

For timers having different ranges for highspeed and lowspeed links or for different variants, the appropriate ranges will be displayed based on the link-type configured.

Important: Currently, the China variant uses ITU values.

Timer

Link Type & Variant

Range of Times

Granularity = 100ms

Default Time

mtp2-tmr-t1

Alignment ready timer

Highspeed; ITU

160..3500 (16 - 350 seconds)

3000 (300 seconds)

Lowspeed; ITU

120 - 500 (12 - 50 seconds)

400 (40 seconds)

Highspeed; ANSI

160 - 3500 (16 to 350 seconds)

1700 (170 seconds)

Lowspeed; ANSI

120 - 500 (12 - 50 seconds)

130 (13 seconds)

mtp2-tmr-t2

Not aligned timer

Highspeed; ITU

50 - 1500 (5 - 150 seconds)

50 (5 seconds)

Lowspeed; ITU

50 - 150 (5 - 15 seconds)

50 (5 seconds)

Highspeed; ANSI

50 - 1500 (5 - 150 seconds)

230 (23 seconds)

Lowspeed; ANSI

50 - 150 (5 - 15 seconds)

115 (11.5 seconds)

mtp2-tmr-t3

Aligned timer

Highspeed/Lowspeed; ITU

10 - 140 (1 - 14 seconds)

15 (1.5 seconds)

Highspeed/Lowspeed; ANSI

10 - 140 (1 - 14 seconds)

115 (11.5 seconds)

mtp2-tmr-t4e

Emergency proving period timer

Highspeed; ITU

4 - 60 (400 milliseconds - 6 seconds)

5 (500 milliseconds)

Lowspeed; ITU

4 - 6 (400 - 600 milliseconds)

5 (500 milliseconds)

Highspeed; ANSI

4 - 60 (400 milliseconds - 6 seconds)

50 (5 seconds)

Lowspeed; ANSI

4 - 6 (400 - 600 milliseconds)

6 (600 milliseconds)

mtp2-tmr-t4n

Normal proving period timer

Once set this timer can be reset but it can not be disabled.

Highspeed; ITU

30 - 700 (3 to 70 seconds)

3 (30 seconds)

Lowspeed; ITU

20 - 95 (2 - 9.5 seconds)

82 (8.2 seconds)

Highspeed; ANSI

30 - 700 (3 to 70 seconds)

3 (30 seconds)

Lowspeed; ANSI

20 - 95 (2 - 9.5 seconds)

23 (2.3 seconds)

mtp2-tmr-t5

Sending status indication busy (SIB) timer

Highspeed/Lowspeed

ITU/ANSI

1 - 2 (100 - 200 milliseconds)

1 (100 milliseconds)

mtp2-tmr-t6

Remote congestion timer

Highspeed/Lowspeed

ITU/ANSI

10 - 60 (1 to 6 seconds)

30 (3 seconds)

mtp2-tmr-t7

Excessive delay of acknowledgement timer

Highspeed/Lowspeed

ITU/ANSI

5 - 20 (500 milliseconds - 2 seconds)

10 (1 second)

mtp2-tmr-t8

Interval timer for error interval monitor timer

Highspeed

ITU/ANSI

1 - 2 (100 - 200 milliseconds)

1 (100 milliseconds)

mtp3-tmr-t1

Delay to avoid mis-sequencing on changeover timer

Highspeed/Lowspeed

ITU/ANSI

5 - 12 (500 - 1200 milliseconds)

5 (500 milliseconds

mtp3-tmr-t12

Waiting for uninhibit acknowledgement timer

Highspeed/Lowspeed

ITU/ANSI

8 - 15 (800 - 1500 milliseconds

8 (800 milliseconds

mtp3-tmr-t13

Waiting for force uninhibit timer

Highspeed/Lowspeed

ITU/ANSI

8 - 15 (800 - 1500 milliseconds

8 (800 milliseconds

mtp3-tmr-t14

Waiting for inhibition acknowledgement timer

Highspeed/Lowspeed

ITU/ANSI

20 - 30 (2000 - 3000 milliseconds

20 (2000 milliseconds

mtp3-tmr-t17

Delay to avoid oscillation of initial alignment failure and link restart

Highspeed/Lowspeed

ITU/ANSI

8 - 15 (800 - 1500 milliseconds

8 (800 milliseconds

mtp3-tmr-t2

Waiting for changeover acknowledgement

Highspeed/Lowspeed

ITU/ANSI

7 - 20 (700 - 2000 milliseconds

7 (700 milliseconds

mtp3-tmr-t22

Local inhibit test timer

Highspeed/Lowspeed

ITU/ANSI

1800 - 3000 (180 - 300 seconds

1800 (180 seconds)

mtp3-tmr-t23

Remote inhibit test timer

Highspeed/Lowspeed

ITU/ANSI

1800 - 3000 (180 - 300 seconds

1800 (180 seconds)

mtp3-tmr-t24

Stabilising timer after removal of local processor outage, used in LPO latching to RPO (national option)

Highspeed/Lowspeed

ITU/ANSI

5 - 15 (500 - 1500 milliseconds)

5 (500 milliseconds)

mtp3-tmr-t3

Time controlled diversion-delay to avoid mis-sequencing on changeback

Highspeed/Lowspeed

ITU/ANSI

5 - 12 (500 - 1200 milliseconds)

5 (500 milliseconds)

mtp3-tmr-t31

BSN requested timer

Highspeed/Lowspeed

ITU/ANSI

50 - 100 (5 to 10 seconds)

50 (5 seconds)

mtp3-tmr-t32

SLT timer

Highspeed/Lowspeed

ITU/ANSI

40 - 120 (4 - 12 seconds)

100 (10 seconds)

mtp3-tmr-t33

Connecting timer

Highspeed/Lowspeed

ITU/ANSI

50 - 100 (5 to 10 seconds)

50 (5 seconds)

mtp3-tmr-t34

Periodic signalling link test timer

Highspeed/Lowspeed

ITU/ANSI

300 - 900 (30 to 90 seconds)

600 (60 seconds)

mtp3-tmr-t4

Waiting for changeback acknowledgement (first attempt)

Highspeed/Lowspeed

ITU/ANSI

5 - 12 (500 to 1200 milliseconds)

5 (500 milliseconds)

mtp3-tmr-t5

Waiting for changeback acknowledgement (second attempt)

Highspeed/Lowspeed

ITU/ANSI

5 - 12 (500 to 1200 milliseconds)

5 (500 milliseconds)

mtp3-tmr-t7

Waiting for signalling data link connection acknowledgement

Highspeed/Lowspeed

ITU/ANSI

10 - 20 (1000 - 2000 milliseconds)

10 (1000 milliseconds)

Timer

Link type & Variant

Range of Times

Default Time

sscf-nni-tmr-t1

ATM Broadband

ITU/ANSI

1 - 65535 (10 - 655350 milliseconds)

Granularity = 10 ms

500 (5 seconds)

sscf-nni-tmr-t2

ATM Broadband

ITU/ANSI

1 - 65535 (10 - 655350 milliseconds)

Granularity = 10 ms

3000 (30 seconds)

sscf-nni-tmr-t3

ATM Broadband

ITU/ANSI

1 - 65535 (10 - 655350 milliseconds)

Granularity = 10 ms

1 (10 milliseconds)

sscop-tmr-cc

SSCOP CC timer

ATM Broadband

ITU/ANSI

1 - 65535 (100 - 6553500 milliseconds)

Granularity = 100 ms

2 (200 milliseconds)

sscop-tmr-idle

SSCOP idle timer

(UNI 3.1 only)

ATM Broadband

ITU/ANSI

1 - 65535 (100 - 6553500 milliseconds)

Granularity = 100 ms

1 (100 milliseconds)

sscop-tmr-keep-alive

SSCOP keep alive timer

For stability purposes, tmrKeepAlive >/= tmrPoll and tmrKeepAlive < tmrNoResponse.

ATM Broadband

ITU/ANSI

1 - 65535 (100 - 6553500 milliseconds)

Granularity = 100 ms

1 (100 milliseconds)

sscop-tmr-no-rsp

SSCOP no response timer

For stability purposes, tmrNoResponse > tmrKeepAlive.

ATM Broadband

ITU/ANSI

1 - 65535 (100 - 6553500 milliseconds)

Granularity = 100 ms

15 (1.5 seconds)

sscop-tmr-poll

SSCOP poll timer

For stability purposes, tmrPoll <= tmrKeepAlive.

ATM Broadband

ITU/ANSI

1 - 65535 (100 - 6553500 milliseconds)

Granularity = 100 ms

1 (100 milliseconds)

Usage Guidelines

For a single link and specified link-type (highspeed or lowspeed), this command sets the timer values listed above. The SS7 variant is determined when the SS7 routing domain is first defined from the Global Configuration mode.

Repeat the timeout command (one timer and value per entry) as needed to configure all required timers.

Important:

Currently, the China variant uses the same timers, values, and defaults as the ITU variant.

Examples

timeout timer timer_value