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VOIP Solution?

VOIP Solution?

VOIP Solution?

I am trying to Configure a Definity G3/Si v.6 for use with a Cisco Router for Voice over IP solutions.  The card that I am going to use in the PBX is a TN767 (DS1 Interface). The Cisco router is a 3660 with a Digital T1 Voice network module. Does anyone know if this can be done?  What is the configuration of the DS1 card? trunk? Signaling?  Framing?  Line encoding? ......

Any help would be appreciated!


RE: VOIP Solution?

Im not using this setup, but if it's like any regular connection, it should use Robbed Bit signaling, ESF framing, and B8ZS Line Coding to connect to standardized devices like routers. That's a pretty serious router, so CISCO would be the ones to contact regarding what T1 properties you'd need for VOIP, but it absolutely CAN be done!
E&M (wink-start)is another common way to negotiate Voice over digital lines.

There's too little information given to help much further - sorry.  :)
Hope this helps a little though!

RE: VOIP Solution?

Thanks!  This should get me started.  I am going to have a tech from cisco take a look at it also.

Thanks again....if you think of anything else,I'll be checking back.

RE: VOIP Solution?

Make sure the T1 card is the HDV-1T1 module.  The HDV has the necessary DSPs.  Hope that helps.


RE: VOIP Solution?

Hope the following conf. would help you. I have the following defined in my switch which connects with CISCO.

Bit Rate: 1.544      Line Coding: b8zs   
Line Compensation: 1          Framing Mode: esf    
Signaling Mode: isdn-pri
Connect: network              
Country Protocol: 1    
Interworking Message: PROGress  Protocol Version: a     
Interface Companding: mulaw     CRC? n       
Idle Code: 01010100             
     DCP/Analog Bearer Capability: 3.1kHz  
Slip Detection? n       Near-end CSU Type: other  
Network Management Protocol: tabs    
Send ANSI-T1.403 One-Second Performance Reports? n   
Far-end CSU Address: b          
                          TRUNK GROUP
Group Number:  Group Type: isdn   CDR Reports: y     
  Group Name:         COR:  TN: 1 TAC:   
   Direction: two-way Outgoing Display? n               
 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                          
TRUNK PARAMETERS                               
Codeset to Send Display: 6 Codeset to Send National IEs:6   
Max Message Size to Send: 260  Charge Advice: none          
Suppl Service Prot:a Digit Handg (in/out): enbloc/enbloc  

Trunk Hunt: ascend                                   
Connected to Toll? n STT Loss: normal DTT o DCO Loss: normal
Calling Number - Delete:     Insert:       Numbering Format:
Bit Rate: 1200         Synchronization: sync  Duplex: full  
Disconnect Supervision - In? y  Out? n      
Answer Supervision Timeout: 0       


RE: VOIP Solution?

Thanx-I am going to look into this config. and see what I can come up with....I spoke with the techs from Cisco and they weren't any help.

RE: VOIP Solution?

We've done it using a 2600 router.

ds1 board config
   robbed-bit, esf, b8zs, leave the defaults

trunk group
   wink/wink with defaults
cisco router
   e&m wink start on the T1 controller
Ours works pretty well, just trying to figure out the best way to integrate Definity Audix.


RE: VOIP Solution?


I'm going to end up having a 2620 router on both ends of my WAN... There's a Defintiy G3si on both ends as well.  What module do I need to buy for the 2620 routers?

Thank you for your help.

RE: VOIP Solution?

Let me add a little more to my question... do you even have to by a module (such as NM-HDV-1T1-24) or can you just use a VWIC card?  I'm a little confused as to how it all fits together.

Thanks agan.

RE: VOIP Solution?

YOu do need to get the NM-HDV module. The VWIC cards go inside of this. You would then need a VWIC-1MFT-T1. Connect this to a DS1 card on your G3.  You will also need a 356A adapter for the PBX. This is an 8 port adapter that you will use to connect the router to the PBX. Use port # 8.  Hope this helps.

RE: VOIP Solution?


Sorry but I have no answers, only questions.

Has anyone in the UK done this? i.e. PBX to PA-VXC-2TE1+ using E1.

We have on Lucent Definity:

Bit rate 2.048
Signaling mode CAS
Line Coding HDB3
Country Protocol 10
Interface companding alaw
Idle code 11111111
Slip Detection n

Router has PA-VXC-2E1+ and:

card type e1 2

dspint DSPfarm2/0

controller E1 2/0
 framing NO-CRC4
 ds0-group 0 timeslots 1-31 type e&m-wink-start

voice-port 2/0:0
dial-peer voice 2081 pots
 destination-pattern 44208.......
 forward-digits all
dial-peer voice 2071 pots
....more of these...

The thing is that the controller goes up and down all of the time.

I am particularly concerned about the country code. The voice switch is set to 10? What does this mean? Can this being miss-matched cause the controller to fail to come up?

What is the equivalent of 10 on the Cisco?

E1 2/0 is down.
  Applique type is Channelized E1 - balanced
  Receiver has remote alarm.
  alarm-trigger is not set
  Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
  International Bit: 1, National Bits: 11111
  Active xconns: 0
  Data in current interval (137 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 99 Unavail Secs

Ideas welcome, I am baffled.


RE: VOIP Solution?

The country protocol on the voice switch is to mention the signalling bits , Country code 10 on voice switch is set for UK. However you can try with some other settings as well perticularly when you are connecting to CISCO.
The signalling bit would specify the ON hook & OFF hook bits. Following are the details about the various country code alongwith the signalling details.

Country code : 10
Status             Forward          Backward
IDLE(ON HOOK)      1101             1101
SIEZE(OFF HOOK)    0101             1101  
ANSWERED(OFF)      0101             0101

Country Code : 7
Status             Forward          Backward
IDLE               1001             1001
SIEZE              0001             1001
ANSWERED           0001             0101

Country Code : 18 (You can try this as well
Status             FORWARD          BACKWARD
IDLE               1111             1111
SIEZE              0111             1111
ANSWERED           0111             0111

These are the ABCD bits for the CAS signalling. hope this might help you while checking in different country codes

RE: VOIP Solution?

Specifically for No7. -  we certainly do it using the same method. The country code <I>Is</I> correct for the uk but we set ours to 1. Also your idle code is incorrect, it should be 01010100.

RE: VOIP Solution?

Just wanted to post on this message because I have almost the exact same setup as listed in the beginning of this post.  Almost everything works fine.  The problem is I can't seem to get the PBX to pass the gateway (3640) the calling party number correctly.  Basaically, When I place a call from my PBX phone to my Voip phones 99% of the time i get (9) as the number that shows up for caller id on the VoIP phone. 1% of the time I get some random number like (668),(3019832380), or (2026289775)... why isn't this working. I'm thinking its pulling the (9) from the dialpeer setup on the 3640..  The caller ID does work the other way. I need help zeroing in on this issue. I need to figure out what the correct configuration would be to pass the "calling party" number or extension down the PRI to the voice gateway.  Any help is much appreciated. Thanks in advance.  


RE: VOIP Solution?

Hey Cold (or anyone with a config to share)

Can you elaborate with a router config for your setup?  I'm also starting a project very similar to the beginning of the post.


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