Appendix j: T-1 and/or E-1 Service
T-1 /E-1 capability must be enabled for your system. It is purchased as an Add-On Module.
There are 2 basic types of digital trunk service. T-1 for most of North America and E-1 for most of Europe and many other countries..
There are a lot technical terms involved. Each carrier has its own set of criteria and terms. Some of our customers are lucky enough to have everything work just fine the first time through. Other times it will take some fine tuning (and a little detective work) to make for smooth sailing. Having a phone company T-1 or E-1 contact who is knowledgeable is a critical first step.
A regular T-1 (also known as robbed bit) has 24 available voice channels (out of 24 time slots).
A PRI_ISDN T-1 has 23 available voice channels.(out of 24 time slots).
An E-1 has 30 available voice channels (out of 32 time slots).
It is imperative that you know the exact manner in which your T-1 or E-1 is setup. For the North American T-1, there are 2 categories:
Regular T-1 (also called robbed bit) and PRI_ISDN.
__________________________________________________________________
Regular T-1 must be set up as follows to operate with the Dialogic voice boards:
coding = ami-d4
framing = superframe
start type = wink (this is preferable, but we can work with immediate if necessary)
signal = dtmf
PRI_ISDN must be set up as follows:
coding = b8zs
framing = extended super frame (ESF)
signal = DTMF
d channel
____________________________________________________________________
Most E-1 trunks are the same - ISDN and 30 available voice channels out of 32 time slots.
Windows NT T-1 installation instructions:
Hardware required: Dialogic T-1 board(s) 240SC-T1, 480SC-T2, 300ESC-T1
When installing the Dialogic cd rom disk, if you are using PRI -ISDN or ISDN, be sure to install all items required. That includes installing the ISDN protocol that you will be using. You should be able to get that information from the phone company who is providing your T1 ISDN service.
Check the label on the Dialogic cd rom - be sure you have at least DNA ver 3. If you are using PRI_ISDN, you will also need the isdn package 4 upgrade from:
Also, when using ISDN, you will need to install the appropriate protocol in the Dialogic Software. You will be asked for that during the install process. After board installation, click on Dialogic Configuration Manager, then double click on your board. You will see several tabs. Click on the Interface tab. Be sure the appropriate ISDN protocol has been selected.
After complete program and cd rom installation:
1) edit the stplus.ini file in the \winnt directory and add the following:
[Digital]
T1type=1 ;enter the number that is appropriate for the type of t-1 you have - 0=none, 1-robbed bit, 2=pri, isdn, 3=E-1 PRI_ISDN
The following lines regarding DNIS and ANI are only applicable if you are receiving these digits. ANI is sometimes called Caller ID. You must have purchase the Caller ID module to be able to work with those incoming ANI and/or DNIS digits.
DNISLen=4 ;number of DNIS digits to acknowledge. If you are receiving DNIS digits, be sure you set a path for the digits in your initial access box. Consider the DNIS digits to be as keys entered.
TotalDigits=23 ;total length of incoming digit string
DNISOnly=yes ;yes/no. if no, then next fields required
DNIS_ANI_Separator=* ;if get both dnis and ani, this is the separator
ANIFirst=no ;yes/no. if yes, then you would get *ANI*DNIS*
AnalogLines=8 ;number of analog lines (only add this if you are using analog lines as well as T-1/E-1). The analog lines must be the LAST lines in your system. Load the T-1 board(s) first at the lowest number(s) for example if you have a 240sct1 and a 160sc board, set the 240sct1 at id 0 (zero) and the 160sc board at id 1 (these are switch settings on the boards). Your T-1 will show in the program as lines 1-24 and the analog lines as 25-28. If you are using a PRI_ISDN trunk, you will only have 23 voice channels vs. 24. The 24th time slot is used strictly for data. Do not use line 24 as part of any Line Groups. It is not a voice channel and cannot be used. If you have additional analog boards, the lines will begin with lines 25.
If you are using an E-1 trunk, you will have 30 available voice channels. Lines 31 and 32 are used for data and signaling Additional analog boards will begin with line 33 and up. Do not use lines 31 and 32 as part of any Line Groups.
Multiple SC boards being used in SC bus mode MUST be cabled together.
********if you are using T-1 in conjunction with a 160SC board for analog lines, please go to http://www.dialogic.com and get the files for the PTR 6564. Please follow instructions on the site to download and use the files. They solve a possible problem with the voice card getting stuck in record mode if a key gets pushed during the recording beep.
OutStartType=1 ;0=immediate, 1=wink
DXCH_WINKDLY=15 ;15 default =150 ms after ring (bit) received before winking
DXCH_WINKLEN=15 ;15 default = 150 ms duration of wink
T1ANIFirst=1 ;if 1, then this is the form *6145551212*5500*
;that is ani number followed by 4 dnis digits
The above parameter needs to be set if your provider sends ANI (caller id) first, instead of DNIS. The program defaults to expect DNIS first.
If you have any difficulties getting the service started, try running the ISDIAG.EXE program. Be sure the D channel is listed as all zero's. If you see any one's you should check back with your t-1 provider. You may not have the t-1 configured correctly. Be sure the isdn protocol is set correctly. If the service starts ok, but the voice program does not answer incoming calls, check those options again. Also do a complete shutdown and restart.
_____________________________________________________________________________ Regular T-1 (robbed bit) must be ami-d4, superframe (SF), dtmf, wink
regular T-1 needs crossover cable from smart jack to board reverse transmit and receive signals green light on board must light up to know that T-1 is connected properly can test using loop back connector (connect 1-4, 2-5)
*************************************************************************** IT IS CRITICAL THAT YOU GET THE CORRECT INFORMATION FROM THE TELEPHONE COMPANY AS TO EXACTLY HOW THE T-1 OPERATES. ***************************************************************************
By default, the Dialogic board sends an A bit for a wink. If your phone company wants a and b bits, you will need to make a change in the spandti.prm file (program files\dialogic\data directory). Make a copy of the file in its current form before making any changes. Close the voice program and stop service on the board driver. In the original spandti.prm, on line 146, remove the semi-colon and change the line from 000c 10 to read: 000c 30. Under the Dialogic configuration Manager, click on the T-1 device, then click on misc. Highlight 'parameter file' and in the value field enter spandti.prm,
Do a complete machine shutdown and restart.
A possible sign of this problem is line 1 answering quickly, then line 2 going off hook. Another sign is that DNIS is being sent by the phone company, but it does not show on the trace file. Line 1 goes off hook, but the phone switch does not see the wink, so no DNIS is sent, then the switch disconnects the line. ____________________________________________________________________________ PRI_ISDN must be b8zs, extended super frame (ESF), d channel ,dtmf
____________________________________________________________________________
CALL TRANSFER
If your T1 supports call transfer, you will need to delete all default information under Maintain, Switch, then click on EACH INDIVIDUAL LINE, then 'transfer info'. All information in those fields MUST be deleted. If you are using T-1 and analog lines, delete the information for the T-1 lines, but enter what is required for the analog lines, which would be lines 25 and above.. ___________________________________________________________________________
Information below only if you will use the Outbound Box:
if you are doing outbound calling the existing Outinterval=x determines the interval the system checks the outbound queue to see if calls need to be made. If you are handling inbound calls as well as using the outbound box, it is suggested that you leave the outbound interval to 3 - meaning check the queue every 3 seconds. You will also want to utilize line groups to be sure you have lines available to take inbound calls. If you are ONLY doing outbound calls, you can increase to the following:
outinterval=100 means pull 10 jobs per second outinterval=500 means pull 2 jobs per second
If you are taking incoming calls DO NOT set the above to lower than 1 second.
To maximize calls, it is suggested that you set retries to zero in the outbound box. Then, you can check the results.dbf and pull no answers and busies to create another file to be recalled later.
Recording files:
To get the best sound quality and ease of recording, you should purchase an analog recording package which contains an analog voice board, a SoundSet, and the VfEdit program (voice file recording and editing software). The SoundSet is an analog device and cannot be attached to a digital T-1 or E-1 voice board. To attempt to call into a T-1 trunk to record can be very frustrating, if not impossible, as the program needs to know which line you will be calling on, and you often cannot reliably gain access on the same channel with each phone call.