BCM50 VoIP Trunk Dialing trouble

[ttscanada]

I have 2 BCM50's connected via VoIP trunks.

When dialing system to system with the dialing works fine.
Both ends are 3 digit DN's with 4 digits being recieved....ie: this end dials 7221 to get the far end DN 221....far end dials 8221 to come back

When dialling thru the VoIP trunks and accessing the PSTN from the far end BCM there is a pause after the 4th digit and if the user dials too fast this is not passed thru. If the user dials slowly the calls go thru.

I bring up both ends with the BCM Monitor and can observe the digit being dropped on the outgoing trunk on the far end.

When the user does dial slowly, there is also a short burst of dial tone shortly after the 4th digit and then you can hear the system access the trunk.

So...if user dials 791234567 too quickly the other end sends out 124567 and then times out...missing the 3
If they dial slightly slower, 1 digit per second, the call goes thru no problem.

Destination Codes are set to absorb 0 on both ends
I have tried various combinations of Private Recieved Number Length (set to 4 now) and Private DN Length (also set to 4) with no success.

Any ideas?
Dave

 

[danthephoneman]

Need some more details on your config. How do you have your IP trunks setup under resources? are you using remote access packages on your trunks? How is your routing setup?

 

[ttscanada]

How do you have your IP trunks setup under resources?
Under Local Gateway
- Fallback to circuit switched is disabled at this point
- No gatekeeper
- H.323 settings as follows, Call Signalling=Direct, Call Signalling Port=1720, RAS Port=0, Enable H245 Tunneling=Off
Under Media Parameters
- Codec preferences are, in order, G.729, G.711-uLaw, G.711-aLaw, and G.723
- Enable Silence Compression=On
- Jitter Buffer=Auto
- let me know if you need the rest on this tab
Under Remote Gateways
- Desitnation Digit=7 (or 8 at far end)
- Destination IP = 192.168.1.29
- GW Type=BCM36
- QoS Monitor=Off
Tx Threshold=0.0

are you using remote access packages on your trunks?
- yes, package 01 is set up to access BlocA and A and that package is attached to the Physical and VoIP Trunks

How is your routing setup?
- DLink 804HV VPN Routers at each BCM and each IP Phone.
- IKE setup
- Tunnels are established and stable
- let me know what you need beyond that please.

I would be happy to call you that would be easier.
Thanks
Dave

 

[danthephoneman]

Everything looks good, sorry if I was not clear on the routing, I was looking for how you had your PSTN calls routed under your dialing plan ,for example if your route is built as Private, Public etc.... Public and Private network settings also.

 

[ttscanada]

No worries, here's what I have
Dialing Plan - Routing
- route 001 uses Pool BlocA and is Private
- Destination Code 7 uses route 001, absorb 0

Dialing Plan - Private Network
- Private Received Number Length = 4
- Private Auto DN = blank
- Private DISA DN = blank
- Private Access Code = 8 here, 7 there
- Private Network Type = CDP
- Private Network ID = 1, both ends
- Location Code = blank
- Private DN Length = 4

VoIP Private Network ID = 0
Zone ID = 0

MCDN is all blank or off except for TRO which is ON
ETSI, both options are set to OFF

Dialing Plan - Public Network
- Public Received Number Length = 3
- Public Auto DN = blank
- Public DISA DN = blank
- Public Network Dialing Plan = National
- Public Network Code = blank

Public Network DN Lengths and Carrier codes are at factory defaults

Thanks
Dave

 

[danthephoneman]

O.K., first thing is to change your Default DN Length under Dialing Plan>Public Network to 14 if you are doing long distance and international dialing. Also you need to build another route for your PSTN calls and set it for public. See if that works.

 

[ttscanada]

Thanks Dan

Just need to make sure I understand.
Under Dialing Plan - Public Network
Where it lists Public Network DN Lengths and you see
DN Prefix DN Length
0 11
00 12
01 17
......
......
Default 7

Is this the default to change to 14?

Also, on the new route for PSTN calls, will that have a different Destination Code that then points to that route? Would I be better to move from single digit Destination Codes to perhaps 2 digits. ie: 77-221 for local extensions at the far end and 78-0000000 for PSTN access?
Not clear on this one, and not much experience with dialing plans so please try to explain a little if you don't mind.

From what I'm reading in the forum I'm starting to believe I have set up a very basic dialing plan and that this is indeed my problem.

Thanks again
Dave

 

[danthephoneman]

A little more background on your routing table.Far end and near end if possible. you will probably have to use a different destination code the way I think you have it set up. the best way to set up your CDP would have been 4 dgit dialing on both ends (7221,7222.....) (8221,8222....), that way you could use a different Dest. code for PSTN trunk access. EXAMPLE: From far end:
Dest Code-7A
Absorb-0
Route-001(Set Route 001 to BlocA-Private)

PSTN Calls
Dest Code-9A
Absorb-0
Route-002(Set Route 002 to BlocA-Public)

 

[MagnaRGP]

Been away for a while...

Could you change the DN's at one side to a different range? That would very much simplify your dialing. You would only need to use the first digit of the DN as a dest code then (absorb 0) and the target line received digits would equal the DN.

Ex:
Near side:
Dest Code 3A = route 001 Type Private (assumes DN's at far side are 3XX)
Dest Code 7A = route 002 type Public (absorb 1 and external number would be the PSTN line pool access code). This gives PSTN access at the other site. for calling.

 

[ttscanada]

Both ends are 221 and up...though I have the same trouble with another system that is set up as 2xx near end 3xx far end.

Both ends have local PSTN access.

Near end dials 7 to access far end thru VoIP trunks and then the extension ie:7221, this works fine.
Right now they dial 7 then 9 then the local number to access the far end PSTN. This is when the pause comes in.
Far end does the same but used 8 instead of 7

Both ends have remote package 01 set up with Line pools A and BlocA in the package. The package is applied to Landline and VoIP Trunks.

From what I'm reading, I think having them dial 7 then 9 for PSTN is the trouble. The route used for 7 is set to private and the Private DN Length = 4....which is where the pause is.

Should I set up another route that accesses the VoIP trunks and set it to Public? And perhaps predial the 9?

I appreciate your patience...I know enough to be dangerous and it shows.
Dave

 

[danthephoneman]

Try Building:
Route 00.....
Dest Code 79
BlocA
Public
Absorb 1
Dialout number 9