To configure SONET sub-channels

Before you begin

SONET sub-channels are available on deep channelized OC12 and OC3 ports. SONET STS1 channels support the following payload types:

  • DS3

  • VT15

  • VT2

Steps
 
1 

Choose Equipment from the navigation tree view selector.

2 

Right-click on the device on which you want to configure SONET sub-channels and select Properties. The Network Element (Edit) form opens.

3 

On the Network Element (Edit) form navigation tree, expand the Shelf icon.

4 

Expand to the port level, right-click on a port object, and choose Create Channel. The Channel Type Selection form opens.

5 

Choose the channel type. The Stsn SONET Channel (Create) form opens with the General tab displayed.

If you are configuring a 4 x Channelized OC3/OC12 ASAP SFP adapter card on a 7705 SAR, Release 7.0 R5 or later, when the MDA Mode is OC12 with SONET framing, you can create an Sts1 channel with a DS1 channel.

6 

Configure the required parameters.

For an OC3 port, use a value from 1 to 3. For an OC12 port, use a value in the format <1 to 4>.<1 to 3>.

The DDM Event Suppression parameter is configurable only on ports on SFPs and XFPs optical modular transceivers.

7 

Click Apply.

8 

Create the STS1 (AU3) sub-channels according to the payload type configured:

  1. To create VT15 (Sdh TU11) sub-channels, go to To create VT15 (TU11) or VT2 (TU12) sub-channels .

  2. To create VT2 (Sdh TU12) sub-channels, go to To create VT15 (TU11) or VT2 (TU12) sub-channels .

  3. To create a DS3 or E3 (SDH framing only) clear channel, go to Step 9 .

9 

To create a DS3 or E3 clear channel, perform the following steps:

  1. From the navigation tree, select an STS1 or AU3 channel and choose Create Channel. The DS3/E3 Channel (Create) form opens.

    • For AU3 channels, DS3 and E3 channelization is available.

    • For STS1 channels, only DS3 channelization is available.

  2. Configure the Description parameter.

  3. Configure the Channelized parameter.

    • Choose Ds1 to channelize the DS3 to carry up to 28 DS1 channelized to the DS0 level.

    • Choose E1 to channelize the DS3 to carry up to 21 E1 channelized to the DS0 level.

    • Choose None to create a DS3 or E3 clear channel. Configure the required parameters.

  4. Click OK.

    If you set the Channelized parameter to None, a DS3 clear channel in Access mode is created under the STS1 or the AU3 in the navigation tree.

    If you set the Channelized parameter to DS1, a DS3 channelized for DS1 is created under the STS1 (AU3). Go to Step 10 in To create TDM DS3 channels to create the DS1 channels.

    If you set the Channelized parameter to E1, a DS3 channelized for E1 is created under the STS1 (AU3) in the navigation tree. Go to Step 10 in To create TDM DS3 channels to create the E1 channels.

End of steps