Hi,
Looks like the VDSL2 mini-pim supportsa speed of 45440 kbps :-
Physical interface: pt-1/0/0, Enabled, Physical link is Up
Interface index: 146, SNMP ifIndex: 524, Generation: 149
Type: PTM, Link-level type: Ethernet, MTU: 1496, VDSL mode, Speed: 45440kbps
Speed: VDSL2
This output and configuration example is avilable in the following link :-
https://www.juniper.net/documentation/en_US/junos11.4/topics/example/vdsl2-pim-security-interface-configuring.html
Tha various profiles supported by the VDSL2 mini pim are :-
http://www.juniper.net/techpubs/en_US/junos12.1x47/topics/concept/vdsl2-pim-security-low-range-services-gateway-support.html
The built-in interfaces on the SRX 210 are explained in the following link :-
http://www.juniper.net/techpubs/en_US/release-independent/junos/topics/concept/built-in-interfaces-srx210.html
It supports Ge interfaces as well with speeds of 1000 Mbps.
Regards,
Sahil
{Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too }