Configuring channelized ports

When configuring channelized ports, the port ID is specified in different ways depending on the level of channelization. Ethernet ports cannot be channelized. Table: Channelization options available on the 7750 SR channelized MDAs lists the channelization options and port syntax available on the 7750 SR channelized MDAs.

Table: Channelization options available on the 7750 SR channelized MDAs
Framing	Channelization/mapping option	Channelized MDAs supporting services on the port/channel
Up to 2,048 kb/s (n*DS0 within E1 up to E1)
SDH	STM4>AUG4>AUG1>VC4>TUG3>TUG2>VC12	TDM satellite configured in mode t1-chstm4-sfp
SDH	STM4>AUG4>AUG1>VC3>TUG2>VC12	TDM satellite configured in mode ts4-chstm1-sfp
Up to 1,544 kb/s (n*DS0 within DS1 up to DS1)
SDH	STM4>AUG4>AUG1>VC4>TUG3>TUG2>TU11>VC11	TDM satellite configured in mode ts1-chstm4-sfp
SDH	STM4>AUG4>AUG1>VC4>TUG3>TUG2>TU12>VC11	None
SDH	STM4>AUG4>AUG1>VC3>TUG2>VC11	TDM satellite configured in mode ts4-chstm1-sfp
SONET	OC12>STS12>STS1 SPE>VT GROUP>VT1.5 SPE	TDM satellite configured in mode ts1-choc12-sfp or in mode ts4-choc3-sfp

Note: The E1 encapsulation in the ASAP MDA and in the channelized MDAs is compliant to G.704 and G.703. The G.703 feature allows a user to configure an unstructured E1 channel on deep channel MDAs and ASAP MDAs. In G.704, time slot 0 carries timing information by a service provider and therefore, only 31 slots are available to the end user. In G.703, all 32 time slots are available to the end user. Timing is provided by the end user.

A port ID for channels has one of the following syntax as applicable to channelization and mapping options where the port configuration syntax is slot/mda/port (Table: Channelized port syntax examples).

Table: Channelized port syntax examples
Port ID for physical port speed
Channel speed	OC12/STM4	OC3/STM1	DS3/E3
SONET/SDH
STS3/STM1	port.sts3-{1 to 4}	port.sts3	—
STS1/STM0	port.sts1-{1 to 4}.{1 to 3}	port.sts1-{1 to 3}	—
TUG3	port.tug3-{1 to 4}.{1 to 3}	port.tug3-{1 to 3}	—
VT15/VC1.1^¹	port.vt15-{1 to 4}.{1 to 3}.{1 to 4}.{1 to 7}	port.vt15-{1 to 3}.{1 to 4}.{1 to 7}	—
VT2/VC12 ^¹	port.vt2-{1 to 4}.{1 to 3}.{1 to 3}.{1 to 7}	port.vt2-{1 to 3}.{1 to 3}.{1 to 7}	—
TDM
DS1 in VT2	port.{1 to 4}.{1 to 3}.{1 to 3}.{1 to 7}	port.{1 to 3}.{1 to 3}.{1 to 7}	—
DS1 in VT15	port.{1 to 4}.{1 to 3}.{1 to 4}.{1 to 7}	port.{1 to 3}.{1 to 4}.{1 to 7}	—
E1 in VT2	port.{1 to 4}.{1 to 3}.{1 to 3}.{1 to 7}	port.{1 to 3}.{1 to 3}.{1 to 7}	—