Add DS1 board to NFAS signaling group 1

[calhoony]

I have a very large trunk group, 238 members that I need to add a new span to, I need to add the new board to my signaling group...because this is my primary trunk group I am hesitant to add it during production hours. Can I add without fear of taking my signaling group out of service?

 

[Mitch672]

very tricky, I would try it after hours. You need to modify the trunk group/possibly the signalling group as well. NFAS is especially tricky because of the shared D channel signalling.



Mitch

AVAYA Certified Expert

 

[4merAvaya]

If I read your post correctly, you already have the Signaling Group configured as NFAS. You currently have (10) DS-1 circuits in the Signaling Group and you will be adding another circuit. Adding this will not affect you Signaling Group assuming you are not changing the location of either the Primary or Backup D channels. You will need to verify the Interface ID that will be used.

Since you will be exceeding the Trunk Group capacity of 255 members, you will have to create a new Trunk Group as well. Use the same paramaters as on the main Trunk Group. If these trunks are used for Outbound service, the new Trunk Group should be your 1st choice for outbound traffic.

Kevin

 

[calhoony]

4merAvaya that is correct, it is alread set up and in service:
SIGNALING GROUP

Group Number: 2 Group Type: isdn-pri
Associated Signaling? n Max number of NCA TSC: 0
Primary D-Channel: 02A0324 Max number of CA TSC: 0
Secondary D-Channel: 03A0324 Trunk Group for NCA TSC:
Trunk Group for Channel Selection:
TSC Supplementary Service Protocol: a Network Call Transfer? n

Trunk Brd Interface ID Trunk Brd Interface ID
1: 02A03 0 11:
2: 03A03 1 12:
3: 05C20 3 13:
4: 05D02 4 14:
5: 05E02 5 15:
6: 05E20 6 16:
7: 05A08 7 17:
8: 08A19 8 18:
9: 03E17 2 19:
10: 01C13 9 20:

all I was wanting to do was add the new Trunk Group board location to this form. Was just a little nervous as that is a lot of trunks to take down if it messed up the sig group.

 

[Mitch672]

yes, Kevin is correct. You probably need to discus this with your circuit provider, as you may want to reconfigure your setup a bit, since AVAYA does have the trunk group limit of 255 members, it might be best to get 2 new circuits with shared D channels and set that up in a new trunk group, and perhaps not disturb the existing one at all.

Mitch


Mitch

AVAYA Certified Expert

 

[calhoony]

I added the new card to sidnaling group 2 today, and built a new trunk group for the new span. I only built 17 trunks up to this point but since I built a new trunk group am I limited to 255 trunks per D channel...my signaling group will have 2 different trunk groups on the pbx side, one with 238 members and one with 24....will this work? All 17 of the new trunks came up and passed traffic.

 

[lopes1211]

You could put 17 members in one group and the rest in another. It will work just fine. Just to keep it cleaner, I would add the new group and put all 23/24 members in it together.

You are also starting to lose some redundancy by having 10 circuits share 2 D channels. If those 2 circuits go down, you lose all 10. Personally, i would give up the 2 additional B channels and have 2 groups with 2 d channels for each group for some added piece of mind.

-CL

 

[calhoony]

Thanks thats what I thought, I have a new trunk group built and will just put all 24 in the new group...this is just temporary as I need to move 5 spans out of one location and to the location where I just added the new one.