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Connection tie-line on MC3810

kenny.brunet
Level 1
Level 1

I have not used this command before and had trouble implementing it recently. I am trying to force digital voice ports on both ends of a link to connect one-for-one but not interested in 'nailing' them up permanently with connection trunk. I placed strings on the voice port and dial-peers for both ends but they failed to make connection. Anyone have anything detailed to read about using this command?

3 Replies 3

r-simpson
Level 3
Level 3

Take a look at this: http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120limit/120xk/1207xk/voxport.htmIt looks pretty straightforward. Maybe you’re running into a bug.

j.lukes
Level 1
Level 1

You need to insure that you are running correct rev of IOS first here is what we are doing in our 3810's for voice over Frame Relay. The calls are up only when active.

Router Configuration For T-1 Connection To PBX Comments ONLY Not In Actual Configuration

controller T1 0

framing esf

linecode b8zs

channel-group 3 timeslots 22-24 speed 64

mode cas

tdm-group 1 timeslots 1-12 type e&m

loop-detect

!

controller T1 1

framing esf

clock source internal

linecode b8zs

mode cas

tdm-group 2 timeslots 1-12 type e&m

voice-group 1 timeslots 17-22 type e&m-wink-start

voice-group 23 timeslots 24 type e&m-wink-start

!

!

!

interface Serial0:3

description Frame Port to AT&T

no ip address

encapsulation frame-relay

no ip route-cache

frame-relay traffic-shaping

!

!

interface Serial0:3.3 point-to-point

description PVC for Tie-Lines/Data

bandwidth 32

ip address XX.XX.XX.XX 255.255.255.252 XX= IP Address of sub interface

no ip route-cache

frame-relay interface-dlci 38

class FR128-V

vofr cisco

!

!

!

!

map-class frame-relay FR32-V Map Class For Frame Relay Fragmentation To insure Voice Quality

frame-relay fragment 240 Check Cisco's site or docs for details in referance to Port & PVC size.

frame-relay adaptive-shaping becn

frame-relay cir 32000

frame-relay bc 4000

frame-relay be 0

frame-relay mincir 32000

frame-relay fair-queue

!

map-class frame-relay FR16-V

frame-relay voice bandwidth 16000

frame-relay fragment 80

no frame-relay adaptive-shaping

frame-relay cir 16000

frame-relay bc 2000

frame-relay be 0

frame-relay fair-queue

!

map-class frame-relay FR128-V

frame-relay voice bandwidth 80000

frame-relay fragment 240

no frame-relay adaptive-shaping

frame-relay cir 128000

frame-relay bc 400

frame-relay fair-queue

!

!

!

!

voice-port 1/17

playout-delay maximum 320

playout-delay nominal 160

busyout monitor Serial0:3

timeouts interdigit 3

timeouts call-disconnect 0

connection Tie-line 9012

!

voice-port 1/18

playout-delay maximum 320

playout-delay nominal 160

busyout monitor Serial0:3

timeouts interdigit 3

timeouts call-disconnect 0

connection Tie-line 9012

!

voice-port 1/19

playout-delay maximum 320

playout-delay nominal 160

busyout monitor Serial0:3

timeouts interdigit 3

timeouts call-disconnect 0

connection Tie-line 9012

!

!

!

dial-peer voice 17 pots

destination-pattern 12

port 1/17

!

dial-peer voice 18 pots

destination-pattern 12

port 1/18

!

dial-peer voice 19 pots

destination-pattern 12

port 1/19

!

dial-peer voice 20 pots

destination-pattern 12

port 1/20

!

dial-peer voice 21 pots

destination-pattern 12

port 1/21

!

dial-peer voice 22 pots

destination-pattern 12

port 1/22

!

dial-peer voice 8012 vofr

no vad

destination-pattern 8012T

session target Serial0:3 532

!

dial-peer voice 9012 vofr

destination-pattern 9012T

session target Serial0:3 38

!

cross-connect 1 T1 0 1 T1 1 2

end

Thanks,

I have sorted it out. The problem was the distant dial-peer cannot strip digits collected after the tie-line string. We adjusted the digit delivery from the PBX and all works well. Thank you again for your suggestions.

Kenny