channelized {ds1 | e1}
no channelized
config>port>tdm>ds3
This command configures the associated DS3 channel as a channelized DS3 with DS1/E1 sub-channels.
The no form of this command disables channelization. The sub-channels must be deleted first before the no command is executed.
no channelized
specifies that the channel is DS1
specifies that the channel is E1
clock-source {loop-timed | node-timed | adaptive | differential}
config>port>tdm>ds1
config>port>tdm>e1
This command specifies the clock source to be used for the link transmit timing.
The following can be configured for loop timing and node timing:
T1/E1 CES circuits on the 16-port T1/E1 ASAP Adapter card
T1/E1 CES circuits on the 32-port T1/E1 ASAP Adapter card
T1/E1 CES circuits on the 2-port OC3/STM1 Channelized Adapter card
T1/E1 CES circuits on the 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card
T1/E1 CES circuits on the 4-port DS3/E3 Adapter card
The following can be configured for adaptive timing:
16-port T1/E1 ASAP Adapter card
32-port T1/E1 ASAP Adapter card
T1/E1 ports on the 7705 SAR-M on T1/E1 CES circuits used for TDM pseudowires
T1/E1 ports on the 7705 SAR-X on T1/E1 CES circuits used for TDM pseudowires
T1/E1 ports on the 7705 SAR-A on T1/E1 CES circuits used for TDM pseudowires
T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module
The following can be configured for differential timing:
16-port T1/E1 ASAP Adapter card
32-port T1/E1 ASAP Adapter card
T1/E1 channels on the 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card
T1/E1 channels on the DS3 ports on the 4-port DS3/E3 Adapter card (E3 ports cannot be channelized)
T1/E1 ports on the 7705 SAR-M
T1/E1 ports on the 7705 SAR-X
T1/E1 ports on the 7705 SAR-A
T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module
The clock source setting also determines the node sync reference if the port is configured as one of the node sync references (config>system>sync-if-timing>{ref1 | ref2}> source-port command). Refer to the 7705 SAR Basic System Configuration Guide, ‟Node Timing”, for more information.
node-timed
the link recovers the clock from the received data stream
the link uses the internal clock when transmitting data
clocking is derived from the incoming pseudowire packets from the MPLS network
clocking is derived from a common clock compared to differential clock recovery (DCR) data in the RTP header in the TDM PW overhead. DCR must also be enabled on the relevant card, module, or chassis with the clock-mode command.
framing {esf | sf | ds1-unframed}
config>port>tdm>ds1
This command specifies the DS1 framing to be used for the port.
The ds1-unframed parameter allows the configuration of an unstructured DS1 channel on the following:
16-port T1/E1 ASAP Adapter card
32-port T1/E1 ASAP Adapter card
2-port OC3/STM1 Channelized Adapter card
4-port OC3/STM1 / 1-port OC12/STM4 Adapter card
4-port DS3/E3 Adapter card (DS3 ports only)
4-port T1/E1 and RS-232 Combination module (T1/E1 ports only)
When an unframed DS1 channel is shut down, it sends the AIS pattern to the far-end DS1. The far end does not react to the AIS pattern if the far-end DS1 is configured as unframed. If the far-end DS1 is configured as framed, the far end declares AIS. The operational status remains up and no alarms are generated while the near end is operationally down. This is normal behavior for unframed G.703 mode.
esf
configures the DS1 port for extended superframe framing
configures the DS1 port for superframe framing
specifies DS1 unframed (G.703) mode for DS1 interfaces
framing {no-crc-g704 | g704 | e1-unframed}
config>port>tdm>e1
This command specifies the E1 framing to be used for the port.
The e1-unframed parameter allows the configuration of an unstructured E1 channel on the following:
16-port T1/E1 ASAP Adapter card
32-port T1/E1 ASAP Adapter card
2-port OC3/STM1 Channelized Adapter card
4-port OC3/STM1 / 1-port OC12/STM4 Adapter card
4-port DS3/E3 Adapter card (DS3 ports only)
4-port T1/E1 and RS-232 Combination module (T1/E1 ports only)
When an unframed E1 channel is shut down, it sends the AIS pattern to the far-end E1. The far end does not react to the AIS pattern if the far-end E1 is configured as unframed. If the far-end E1 is configured as framed, the far end declares AIS. The operational status remains up and no alarms are generated while the near end is operationally down. This is normal behavior for unframed G.703 mode.
g704
configures the E1 port for G.704 framing
configures the E1 port for G.704 framing with no CRC4
specifies E1 unframed (G.703) mode for E1 interfaces
hold-time {[up hold-time-up] [down hold-time-down]}
no hold-time
config>port>tdm>ds1
config>port>tdm>e1
This command configures the DS1/E1 link dampening timers in 100s of milliseconds, which guards against reporting excessive interface transitions. Once implemented, subsequent transitions of the interface from one state to another are not advertised to upper layer protocols until the configured timer has expired.
no hold-time
the hold-timer for link-up event dampening. A value of zero (0) indicates that an up transition is reported immediately.
the hold-timer for link-down event dampening. A value of zero (0) indicates that a down transition is reported immediately.
loopback {line | internal | fdl-ansi | fdl-bellcore | payload-ansi}
no loopback
config>port>tdm>ds1
This command puts the specified port or channel in a loopback mode.
A line loopback loops frames received on the corresponding port or channel back toward the transmit (egress) direction before reaching the framer. The bit stream is not reframed. The electrical signal is regenerated by the Tx line interface unit (LIU) and the timing is provided by the Rx LIU. On the 2-port OC3/STM1 Channelized Adapter card, 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card, or 4-port DS3/E3 Adapter card, the traffic is also passed through to the fabric.
An internal loopback loops the frames that are coming in an egress direction from the fabric toward the framer, back to the fabric. This is usually referred to as an equipment loopback. On the 2-port OC3/STM1 Channelized Adapter card, 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card, or 4-port DS3/E3 Adapter card, the frames are also transmitted on the line.
The fdl-ansi loopback command sends a repeating 16-bit ESF data link code word to the remote end requesting that it enter into a network line loopback. The ansi keyword enables the remote line FDL ANSI bit loopback on the T1 line, in accordance with the ANSI T1.403 specification.
The fdl-bellcore loopback command sends a repeating 16-bit ESF data link code word to the remote end requesting that it enter into a network line loopback. The bellcore keyword enables the remote line FDL Bellcore bit loopback on the T1 line, in accordance with the Bellcore TR-TSY-000312 specification.
The payload-ansi loopback command sends a repeating 16-bit ESF data link code word to the remote end requesting that it enter into a network payload loopback. A payload loopback loops frames back toward the transmit (egress) direction after reaching the framer. The bit stream is reframed. The electrical signal is regenerated by the Tx LIU and the timing is provided by the Rx LIU.
The loopback command is not saved to the system configuration.
The no form of this command disables the specified type of loopback.
The fdl-ansi, fdl-bellcore and payload-ansi options can only be configured if DS1 framing is set to ESF.
The 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card cannot initiate fdl-ansi, fdl-bellcore, or payload-ansi loopbacks.
The 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card supports up to 16 line loopbacks and 16 internal loopbacks at a time.
no loopback
places the associated port or channel into line loopback mode
places the associated port or channel into internal loopback mode
requests an FDL line loopback in accordance with the ANSI T1.403 specification
requests an FDL line loopback in accordance with the Bellcore TR-TSY-000312 specification
requests a payload loopback using ANSI signaling
loopback {line | internal}
no loopback
config>port>tdm>e1
This command puts the specified port or channel in a loopback mode.
A line loopback loops frames received on the corresponding port or channel back toward the transmit (egress) direction before reaching the framer. The bit stream is not reframed. The electrical signal is regenerated by the Tx line interface unit (LIU) and the timing is provided by the Rx LIU. On the 2-port OC3/STM1 Channelized Adapter card, 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card, or 4-port DS3/E3 Adapter card, the traffic is also passed through to the fabric.
An internal loopback loops the frames that are coming in an egress direction from the fabric toward the framer, back to the fabric. This is usually referred to as an equipment loopback. On the 2-port OC3/STM1 Channelized Adapter card, 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card, or 4-port DS3/E3 Adapter card, the frames are also transmitted on the line.
The no form of this command disables the specified type of loopback.
no loopback
places the associated port or channel into line loopback mode
places the associated port or channel into internal loopback mode
[no] remote-loop-respond
config>port>tdm>ds1
This command configures the DS1 channel response to remote loopbacks. When enabled, the channel responds to remote loopbacks; when disabled, the channel does not respond.
The 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card cannot respond to fdl-ansi, fdl-bellcore, or payload-ansi loopbacks.
no remote-loop-respond
[no] report-alarm {ais | los | oof | rai | looped | ber-sd | ber-sf}
config>port>tdm>ds1
config>port>tdm>e1
This command enables logging of DS1 or E1 alarms. When configured, logging is enabled for the raising and clearing of the specified alarms.
The no form of this command disables logging of the specified alarms.
reports alarm indication signal errors
reports loss of signal errors
reports out-of-frame errors
reports remote alarm indication signal errors
reports looped packets errors
reports BER line signal degradation errors on:
the 16-port T1/E1 ASAP Adapter card
the 32-port T1/E1 ASAP Adapter card
T1/E1 ports on the 7705 SAR-M
T1/E1 ports on the 7705 SAR-X
T1/E1 ports on the 7705 SAR-A
T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module
reports BER line signal failure errors on:
the 16-port T1/E1 ASAP Adapter card
the 32-port T1/E1 ASAP Adapter card
T1/E1 ports on the 7705 SAR-M
T1/E1 ports on the 7705 SAR-X
T1/E1 ports on the 7705 SAR-A
T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module
signal-mode cas
no signal-mode
config>port>tdm>ds1
config>port>tdm>e1
This command enables or disables Channel Associated Signaling (CAS) at the port and circuit levels. When enabled, control signals (such as those for synchronizing and bounding frames) are carried in the same channels as voice and data signals.
If the signal mode for a DS1/E1 port or channel is configured for no signal-mode, all DS0/64 kb/s channels within the DS1 or E1 port will not be enabled for CAS. Individual channel groups within that DS1 or E1 port inherit this state and cannot be changed.
If the signal mode for a DS1/E1 port or channel is configured for signal-mode cas, any new channel groups default to signal-mode cas.
The signal mode must be configured for CAS before creating a Cpipe service that supports T1 or E1 with CAS. Refer to the 7705 SAR Services Guide, ‟Creating a Cpipe Service”, for information on configuring a Cpipe service.
This command is valid only on the following cards and platforms when DS1 framing is set to esf or sf, or E1 framing is set to g704 or no-crc-g704:
16-port T1/E1 ASAP Adapter card
32-port T1/E1 ASAP Adapter card
2-port OC3/STM1 Channelized Adapter card
4-port DS3/E3 Adapter card
4-port T1/E1 and RS-232 Combination module
7705 SAR-A
7705 SAR-M
7705 SAR-X
specifies channel associated signaling
ssm
config>port>tdm>ds1
config>port>tdm>e1
This command accesses the context to configure DS1 or E1 Synchronization Status Messaging (SSM) parameters.
Only g704 framing mode should be used with E1 SSM. The no-crc-g704 and e1-unframed framing modes are not compatible with E1 SSM. See the framing (E1) command for information on E1 framing.
Only esf framing mode should be used with DS1 SSM. See the framing (DS1) command for information on DS1 framing.
ssm-bit sa-bit
no ssm-bit
config>port>tdm>e1>ssm
This command configures which Sa bit in the E1 frame to use for conveying the quality level SSM information.
8
identifies which Sa bit to use for SSM information
[no] tx-dus
config>port>tdm>ds1>ssm
config>port>tdm>e1>ssm
This command enables or disables the transmission of 0xF (DUS) (do not use for synchronization) in the SSM channel. The code 0xF is transmitted but it is translated to DNU (do not use) for E1 or SDH and to DUS for SONET or T1.
no tx-dus
threshold {ber-sd | ber-sf} rate threshold-rate
no threshold {ber-sd | ber-sf}
config>port>tdm>ds1
config>port>tdm>e1
This command configures the line signal degradation (SD) bit error rate (BER) and line signal failure (SF) thresholds.
PCV error rates are measured and when they cross either the degradation or failure threshold, alarms are raised.
The no form of this command disables the BER-SD or BER-SF feature.
ber-sd - disabled
ber-sf - disabled
specifies the BER that specifies signal degradation
specifies the BER that specifies signal failure
specifies the number of errors, in millions