Connect PBXs together via ISDN cards

[Paulreg]

I have an old AT&T Definity with 2 ISDN trunk cards. One I use to connect to the PSTN. The other I would like to use to route calls to another PBX (Trixbox) via its ISDN card. Is this possible ? Do I need a cross over cable or will a straight RJ45 work ?
Thanks
Paulreg

 

[Nick44]

Hi,
Not as simple as that I'm afraid! You first need to decide what signalling protocol you are going to use, this will depend on what both PBX's are licenced for/capable of and what type of traffic you wish to pass between them. The simplest is probably Q-Sig.
Check your Definity is licenced for this in disp sys cust, and that the other PBX is too.
Then you will need to set up a signal group, trunk group, and route for any calls that you are going to send.

I assume the two PBX's are in the same room/building? A crossover cable should not be needed if you are using RJ45 interconnects.



Speak softly and carry a big switch

 

[Paulreg]

First time I have looked at customer options.
Long list. Most set to n.
Couldn't see Q-Sig though or any reference to traffic types.

 

[klbrown53]

You could possibly set up just a basic DS1 tie trunk group between the two PBX's. No signal group needed that way. You would loose PRI features though. Display System-Parameters Customer-Options just needs to have DS1 set to yes. Might have to experiment with what settings to use on the DS1 circuit packs themselves. You will have to administer the DS1 circuit pack by Add DS1 xxxx (xxxx being the slot that the DS1 pack is located in). If you don't have UDP turned on (uniform dialing plan) then you could just access the trunk group by dialing the trunk access code. Kind of a down and dirty way of getting tie trunks between two locations but it can be done. The hardest part will be getting the DS1 circuit up.

Good luck

Good luck

 

[simreal]

I just setup an ISDN-PRI circuit over to an NEC so it is possible. If the Tribox will do ISDN-PRi is just a matter of figuring out the settings between the two. I would be glad to post the configs on the avaya side of the trunk I setup if you're interested.

 

[Paulreg]

Hi
Thanks everyone for all the posts.
I have not made much progress on this week.
I'll have to get a move on because questions are being asked.
Simreal, yes please to the Avaya settings.
Turns out I have a support contract and I have placed a call with them but no response so far.
Thanks
Paulreg

 

[kwing112000]

in most cases when you connect to pieces of CPE equipment together you will need a crossover.

 

[simreal]

Here's the trunk group on the Avaya side:

Voice System name: Norcross S8700.. - TRUNK GROUP

Group Number: 50 Group Type: isdn CDR Reports: y
Group Name: Tie to NEC COR: 95 TN: 3 TAC: #50
Direction: two-way Outgoing Display? y Carrier Medium: PRI/BRI
Dial Access? y Busy Threshold: 255 Night Service:
Queue Length: 0
Service Type: tie Auth Code? n TestCall ITC: rest
Far End Test Line No:
TestCall BCC: 4
Group Type: isdn

TRUNK PARAMETERS
Codeset to Send Display: 0 Codeset to Send National IEs: 6
Max Message Size to Send: 260 Charge Advice: none
Supplementary Service Protocol: a Digit Handling (in/out): enbloc/enbloc

Trunk Hunt: cyclical QSIG Value-Added? n
Digital Loss Group: 13
Incoming Calling Number - Delete: Insert: Format: unk-unk
Bit Rate: 1200 Synchronization: async Duplex: full
Disconnect Supervision - In? y Out? n
Answer Supervision Timeout: 0


TRUNK FEATURES
ACA Assignment? n Measured: both Wideband Support? n
Internal Alert? n Maintenance Tests? y
Data Restriction? n NCA-TSC Trunk Member:
Send Name: y Send Calling Number: y
Used for DCS? n Send EMU Visitor CPN? n
Suppress # Outpulsing? n Format: private
Outgoing Channel ID Encoding: preferred UUI IE Treatment: service-provider

Replace Restricted Numbers? n
Replace Unavailable Numbers? n
Send Connected Number: y
Network Call Redirection: none Hold/Unhold Notifications? n
Send UUI IE? n Modify Tandem Calling Number? y
Send UCID? n
Send Codeset 6/7 LAI IE? n Ds1 Echo Cancellation? n

Apply Local Ringback? n US NI Delayed Calling Name Update? n

Network (Japan) Needs Connect Before Disconnect? n


QSIG TRUNK GROUP OPTIONS
SBS? n


TRUNK GROUP
Administered Members (min/max): 1/23
GROUP MEMBER ASSIGNMENTS Total Administered Members: 23

Port Code Sfx Name Night Sig Grp
1: 08A1401 TN464 G 50
2: 08A1402 TN464 G 50
3: 08A1403 TN464 G 50
4: 08A1404 TN464 G 50
5: 08A1405 TN464 G 50
6: 08A1406 TN464 G 50
7: 08A1407 TN464 G 50
8: 08A1408 TN464 G 50
9: 08A1409 TN464 G 50
10: 08A1410 TN464 G 50
11: 08A1411 TN464 G 50
12: 08A1412 TN464 G 50
13: 08A1413 TN464 G 50
14: 08A1414 TN464 G 50
15: 08A1415 TN464 G 50


TRUNK GROUP
Administered Members (min/max): 1/23
GROUP MEMBER ASSIGNMENTS Total Administered Members: 23

Port Code Sfx Name Night Sig Grp
16: 08A1416 TN464 G 50
17: 08A1417 TN464 G 50
18: 08A1418 TN464 G 50
19: 08A1419 TN464 G 50
20: 08A1420 TN464 G 50
21: 08A1421 TN464 G 50
22: 08A1422 TN464 G 50
23: 08A1423 TN464 G 50
24:
25:
26:
27:
28:
29:
30:

 

[simreal]

And here is the signaling group:

Voice System name: Norcross S8700.. - SIGNALING GROUP

Group Number: 50 Group Type: isdn-pri
Associated Signaling? y Max number of NCA TSC: 5
Primary D-Channel: 08A1424 Max number of CA TSC: 0
Trunk Group for NCA TSC: 50
Trunk Group for Channel Selection: 50
Supplementary Service Protocol: a Network Call Transfer? n