tdm
config>port
This command enables the context to configure:
DS1/E1 parameters for a port on a channelized 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, or 4-port DS3/E3 Adapter card (DS3 ports only)
DS3 parameters for a port on a channelized 2-port OC3/STM1 Channelized Adapter card
DS3/E3 parameters for a port on a 4-port DS3/E3 Adapter card
codirectional and teleprotection interfaces (TPIF) parameters for a port on an 8-port Voice & Teleprotection card
teleprotection interfaces (TPIF) parameters for a port on an 8-port C37.94 Teleprotection card
TDM is a mechanism that divides the bandwidth of a stream into separate channels or timeslots by assigning each stream a different timeslot in a set. TDM repeatedly transmits a fixed sequence of timeslots over a single transmission channel. Each individual data stream is reassembled at the receiving end based on the timing.
n/a
buildout {long | short}
config>port>tdm
This command specifies the line buildout (cable length) for physical DS1 ports on the 16-port T1/E1 ASAP Adapter card or 32-port T1/E1 ASAP Adapter card, or for physical DS3/E3 ports on the 4-port DS3/E3 Adapter card.
short (this is the only option available for the 16-port T1/E1 ASAP Adapter card and 32-port T1/E1 ASAP Adapter card)
sets the line buildout for length runs up to 450 ft (for the 4-port DS3/E3 Adapter card only)
sets the line buildout for length runs up to 225 ft (for the 4-port DS3/E3 Adapter card only) or up to 655 ft (for the 16-port T1/E1 ASAP Adapter card and 32-port T1/E1 ASAP Adapter card)
[no] codir
config>port>tdm
This command creates a 64 kb/s codirectional G.703 channel on a port on the 8-port Voice & Teleprotection card.
The no form of this command deletes the port’s codirectional channel.
n/a
[no] channel-group channel-group-id
config>port>tdm>codir
config>port>tdm>tpif
This command creates a DS0 channel group on a TDM interface on the 8-port Voice & Teleprotection card or 8-port C37.94 Teleprotection card.
The no form of this command deletes the port’s codirectional or TPIF channel group.
n/a
specifies the channel group ID number
encap-type cem
config>port>tdm>codir>channel-group
config>port>tdm>tpif>channel-group
This command specifies the encapsulation type. The channel group must be deleted before changing the encapsulation type.
no encap-type
circuit emulation (TDM)
mode access
config>port>tdm>codir>channel-group
config>port>tdm>tpif>channel-group
This command configures the interface for access mode. An access port or channel is used for customer-facing traffic. A Service Access Point (SAP) can only be configured on an access port or channel. When an interface is configured for access mode, the appropriate encapsulation type must be specified.
access
configures the port as service access
framing {framed | unframed}
no framing
config>port>tdm>tpif
This command configures framing on a C37.94 port in a TPIF VC.
If the VC is configured for unstructured circuit emulation (satop-tpif) (only supported on the odd-numbered ports on the 8-port C37.94 Teleprotection card), the framing mode must be set to unframed.
The no form of this command removes the configuration.
no framing
configures the port for framing
configures the port for unframed mode
loopback {internal | line}
no loopback
config>port>tdm>codir
config>port>tdm>tpif
This command puts the specified interface into a loopback mode. The port must be shut down before loopback mode is enabled.
This command is not saved in the system configuration between boots.
The no form of this command disables the loopback on the interface.
no loopback
places the port or channel into an internal loopback mode. An internal loopback loops the frames from the local router back to the framer.
places the port or channel into a line loopback mode. A line loopback loops data received on the port or channel back to the remote end.
report-alarm {ais | los | rai}
no report-alarm
config>port>tdm>codir
config>port>tdm>tpif
This command enables logging of codirectional and TPIF alarms for the specified interface or channel.
The no form of this command disables logging of the specified alarm.
ais for codir
rai for tpif
reports alarm indication signal errors (configurable for codir only)
reports loss of signal errors
reports remote alarm indication signal errors (configurable for tpif only)
[no] timing-8k
config>port>tdm>codir
This command enables generation of an 8-kHz signal on a codirectional interface.
disabled
[no] ds1 ds1-id
config>port>tdm
This command enables the context to configure DS1 frame parameters on a channelized 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, or 4-port DS3/E3 Adapter card (DS3 ports only).
T1 transmits DS1-formatted data at 1.544 Mb/s through the network.
Once a channel has been configured for DS1, all ports on the card can only be configured for DS1. There cannot be a mix of DS1 and E1 channels on the same card.
The no form of this command deletes the specified DS1 channel.
n/a
the identifier of the DS1 channel
[no] ds3 [sonet-sdh-index]
config>port>tdm
This command enables the context to configure DS3 parameters on a 2-port OC3/STM1 Channelized Adapter card or a 4-port DS3/E3 Adapter card.
DS3 lines carry 28 DS1 signals and a 44.736 Mb/s data rate.
If DS3 links are provisioned on a channelized SONET/SDH Adapter card, you must provision the parent STS-1 SONET/STM0 SDH path first (this requirement does not apply to the 4-port DS3/E3 Adapter card).
The no form of this command disables DS3 capabilities on the specified SONET/SDH path or DS3 port. The DS3 parameters must be disabled if a clear channel is enabled by default. A clear channel uses out-of-band signaling, not in-band signaling; therefore, the entire bit rate of the channel is available.
n/a
specifies the components making up the specified SONET/SDH path on the 2-port OC3/STM1 Channelized Adapter card
[no] e1 e1-id
config>port>tdm
This command enables the context to configure E1 parameters on a channelized 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, or 4-port DS3/E3 Adapter card (DS3 ports only). E1 is a standard WAN digital communication format designed to operate over copper facilities at a rate of 2.048 Mb/s.
Once a channel has been configured for E1, all ports on the card can only be configured for E1. There cannot be a mix of DS1 and E1 channels on the same card.
The no form of this command deletes the specified E1 channel.
n/a
the identifier of the E1 channel
[no] e3 [sonet-sdh-index]
config>port>tdm
This command enables the context to configure E3 parameters on a 4-port DS3/E3 Adapter card. E3 lines provide a speed of 34.368 Mb/s and are frequently used by service providers outside North America.
n/a
specifies the components making up the specified SONET/SDH path on the 2-port OC3/STM1 Channelized Adapter card
encoding {b8zs | ami}
config>port>tdm
This command configures the encoding for the physical DS1 (T1) port. DS1 ports can be configured for either B8ZS (bipolar with eight-zero substitution) zero code suppression or AMI (alternate mark inversion). B8ZS and AMI are line coding techniques.
This command is supported on the following cards and platforms:
16-port T1/E1 ASAP Adapter card
32-port T1/E1 ASAP Adapter card
7705 SAR-A (on the variant with T1/E1 ports)
7705 SAR-M (on the variants with T1/E1 ports)
b8zs
length {133 | 266 | 399 | 533 | 655}
config>port>tdm
This command configures the line length for the physical DS1 port on the 16-port T1/E1 ASAP Adapter card or 32-port T1/E1 ASAP Adapter card.
Line buildout settings must be adjusted with line length in order to ensure nominal operating voltage levels for receivers. Ideal receiver voltage levels should be < 3Vp.
133
line-impedance {75 | 100 | 120}
config>port>tdm
This command configures the line impedance of a port. Line impedance is set on a per-port basis and ports on the same card can have different values. Before changing the line impedance of a port, the port must be shut down.
100 for DS1
120 for E1
75 Ω
100 Ω
120 Ω
[no] tpif
config>port>tdm
This command creates an IEEE C37.94 teleprotection interface (TPIF) channel.
The no form of this command deletes the port’s TPIF channel.
n/a
timeslots timeslots
config>port>tdm>tpif>channel-group
This command defines the list of DS0 timeslots to be used in the TPIF channel group.
1
specifies the number of consecutive timeslots to be associated with the channel group. The value must start from the first timeslot. It represents line bandwidth of n x 64 kb/s, where n is the number of timeslots.