Actions
Feature #1820
closeddon't open E1/T1 timeslots not used by the BSC
Status:
Closed
Priority:
High
Assignee:
Category:
-
Start date:
10/15/2016
Due date:
% Done:
100%
Resolution:
Spec Reference:
Description
As far as I know, libosmo-abis / openbsc currently open all timeslots of a E1/T1 interface, even those not actually needed/used.
We should make sure that the code really only opens those timeslots (sockets in mISDN, devices in DAHDI) that the BSC needs.
This is a pre-condition for a BSC-located PCU, as that PCU will want to open some of those timeslots for PCU TRAU frames.
Updated by laforge over 7 years ago
- Target version set to RBS2000 with BSC-located PCU
Updated by laforge over 7 years ago
at least for DAHDI it seems this is already the case, so this issue can actually be closed, I presume:
root@sysmobsc-e1:~# cat /proc/dahdi/1 Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" ESF/B8ZS 1 TE4/0/1/1 Clear (In use) 2 TE4/0/1/2 Clear (In use) 3 TE4/0/1/3 Clear (In use) 4 TE4/0/1/4 Clear 5 TE4/0/1/5 Clear 6 TE4/0/1/6 Clear 7 TE4/0/1/7 Clear 8 TE4/0/1/8 Clear 9 TE4/0/1/9 Clear 10 TE4/0/1/10 Clear 11 TE4/0/1/11 Clear 12 TE4/0/1/12 Clear 13 TE4/0/1/13 Clear 14 TE4/0/1/14 Clear 15 TE4/0/1/15 Clear 16 TE4/0/1/16 Clear 17 TE4/0/1/17 Clear 18 TE4/0/1/18 Clear 19 TE4/0/1/19 Clear 20 TE4/0/1/20 Clear 21 TE4/0/1/21 Clear 22 TE4/0/1/22 Clear 23 TE4/0/1/23 Clear 24 TE4/0/1/24 Clear root@sysmobsc-e1:~# lsof | grep -i dahdi osmo-nitb 649 root 5u CHR 249,1 0t0 8588 /dev/dahdi/chan/001/001 osmo-nitb 649 root 6u CHR 249,2 0t0 8589 /dev/dahdi/chan/001/002 osmo-nitb 649 root 7u CHR 249,3 0t0 8590 /dev/dahdi/chan/001/003
When activating a Um timeslot for PDCH, we could instruct the ICP to switch it to a completely different E1/T1 timeslot.
Updated by laforge over 7 years ago
- Status changed from New to Resolved
- Assignee changed from dexter to laforge
- % Done changed from 0 to 100
Updated by dexter over 7 years ago
Also checked it - looks good:
root@sysmocom:~# lsof | grep "/dev/dah" osmo-nitb 19904 root 4u CHR 249,1 0t0 9353 /dev/dahdi/chan/001/001 osmo-nitb 19904 root 5u CHR 249,2 0t0 9363 /dev/dahdi/chan/001/002 osmo-nitb 19904 root 6u CHR 249,3 0t0 9365 /dev/dahdi/chan/001/003
Actions