Administrator’s Guide for the VSX Series
Appendix - 2
Multipoint Dialing Speed Information
In a multipoint call, all parties must be connected at the same speed.
The following table shows the maximum allowable dialing speeds for the
number of sites, including the main site, in a call.
Maximum speeds can be further limited by the communications equipment.
Number of
Sites in a Call
BRI Lines
Maximum Speed for Each Party in the Call
(Kbps)
BRI PRI/Serial H.323
2 with 2 lines 2 256 1920 1920
2 with 3 lines 3 384 1920 1920
2 with 4 lines 4 512 1920 1920
3 with 2 lines 2 128 512 512
3 with 3 lines 3 192 512 512
3 with 4 lines 4 256 512 512
4 with 2 lines 2 64 384 384
4 with 3 lines 3 128 384 384
4 with 4 lines 4 128 384 384
H.323 Only Refer to H.323 speeds in this table.