Premicell Config

[tsturg]

We have just inherited some Nokia Premicells and have connected these us as CO trunks. Our system is CM3.1.4

2 issues we have are, 1 no matter how the cell/mobile number is dialed, it always takes about 15 seconds for the call to connect and dial as per the trace below:

15:09:36 active station 2881 cid 0x2b67
15:09:36 G711A ssff ps:20 rn:1/1 10.223.12.66:2098 10.223.2.84:2316
15:09:36 xoip: faxT modemT tty:US 10.223.2.84:2316 uid:0x6701
15:09:41 dial 907859896435# route:ARS
15:09:41 term trunk-group 91 cid 0x2b67
15:09:41 G711A ssff ps:20 rn:1/1 10.223.12.66:2098 10.223.2.89:2096
15:09:41 xoip: faxT modemT tty:US 10.223.2.89:2096 uid:0x6701
15:09:41 dial 907859896435# route:ARS
15:09:41 route-pattern 13 preference 1 cid 0x2b67
15:09:41 seize trunk-group 91 member 3 cid 0x2b67
15:09:43 dial 907859896435# route:ARS
15:09:43 outpulse done 07859896435#
VOIP data from: 10.223.2.89:2096
15:09:46 Jitter:0 0 0 0 0 0 0 0 0 0: Buff:8 WC:1 Avg:0
15:09:46 Pkloss:0 0 0 0 0 0 0 0 0 0: Oofo:0 WC:0 Avg:0
15:09:53 active trunk-group 91 member 3 cid 0x2b67
VOIP data from: 10.223.2.89:2096
15:09:56 Jitter:0 0 0 0 0 0 0 0 0 0: Buff:8 WC:1 Avg:0
15:09:57 Pkloss:0 0 0 0 0 0 0 0 0 0: Oofo:0 WC:0 Avg:0
15:09:58 idle station 2881 cid 0x2b67

Here is the trunk group set up.

TRUNK GROUP

Group Number: 91 Group Type: co CDR Reports: y
Group Name: Langley Premicell #2 COR: 60 TN: 12 TAC: #91
Direction: two-way Outgoing Display? y
Dial Access? y Busy Threshold: 99 Night Service:
Queue Length: 0 Country: 1 Incoming Destination: 6029
Comm Type: voice Auth Code? n Digit Absorption List:
Prefix-1? y Trunk Flash? n Toll Restricted? y

Trunk Type: loop-start

Group Type: co Trunk Type: loop-start

TRUNK PARAMETERS

Outgoing Dial Type: tone Cut-Through? n
Trunk Termination: rc Disconnect Timing(msec): 200

Auto Guard? n Call Still Held? n Sig Bit Inversion: none
Analog Loss Group: 6 Digital Loss Group: 11
Trunk Gain: high

Disconnect Supervision - In? y Out? n Cyclical Hunt? y
Answer Supervision Timeout: 10 Receive Answer Supervision? n
Administer Timers? y
TRUNK FEATURES
ACA Assignment? n Measured: both
Maintenance Tests? y
Data Restriction? n

Abandoned Call Search? n
Suppress # Outpulsing? y

Charge Conversion: 1
Decimal Point: none
Currency Symbol:
Charge Type: units Receive Analog Incoming Call ID: disabled
Per Call CPN Blocking Code:
Per Call CPN Unblocking Code:

Outgoing ANI: Ds1 Echo Cancellation? n
ADMINISTRABLE TIMERS
Send Incoming/Outgoing Disconnect Timers to TN465 Ports? n
Incoming Disconnect(msec): 500 Outgoing Disconnect(msec): 500
Outgoing Dial Guard(msec): 1600
Incoming Glare Guard(msec): 1500 Outgoing Glare Guard(msec): 1500


Ringing Monitor(msec): 5200 Incoming Seizure(msec): 180
Outgoing End of Dial(sec): 10 Outgoing Seizure Response(sec): 1
Programmed Dial Pause(msec): 1500
Flash Length(msec): 540





END TO END SIGNALING
Tone(msec): 350 Pause(msec): 150

OUTPULSING INFORMATION
PPS: 10 Make(msec): 40 Break(msec): 60 PPM? n
ATMS THRESHOLDS
TTL Type: 105-w-rl Far End Test No:
TTL Vendor: TTL Contact:
Trunk Vendor: Trunk Contact:
Trunk Length:
MARGINAL UNACCEPTABLE
Min Max Min Max
1004 Hz Loss: -2 21 -2 21

-Dev +Dev -Dev +Dev
404 Hz Loss: 9 9 9 9
2804 Hz Loss: 9 9 9 9

Maximum C Message Noise: 55 55
Maximum C Notched Noise: 74 74
Minimum SRL-HI: 0 0
Minimum SRL-LO: 0 0
Minimum ERL: 0 0

Allow ATMS Busyout, Error Logging and Alarming? n
TRUNK GROUP
Administered Members (min/max): 1/3
GROUP MEMBER ASSIGNMENTS Total Administered Members: 3

Port Code Sfx Name Night Mode Type Ans Delay
1: 11B1001 TN747 B
2: 11B1004 TN747 B
3: 11B1006 TN747 B
4:
5:
6:


The second issue is when the call has been connected, the user on the IP phone hears a constant hissing sound and a lot of feedback. The users on the cell/mobile hears a great quality call.

Please let me know if you have any ideas of who to resolve these issues.

 

[392]

Number of digits expected is not set, it is timing out under interdigit timer. Set the number or add a pound to the endof the dial string.

Your trunk gain is set high, that will amplify any hiss coming from the attached equipment. You'll have to fiddle with values to get the best compromise.

 

[tsturg]

Thanks 392. The digits for these calls are set to min 11 max 11 in the ARS tables. Below you can see what I mean by the timing:

15:09:41 dial 907859896435# route:ARS
15:09:41 route-pattern 13 preference 1 cid 0x2b67
15:09:41 seize trunk-group 91 member 3 cid 0x2b67
15:09:43 dial 907859896435# route:ARS
15:09:43 outpulse done 07859896435#
VOIP data from: 10.223.2.89:2096
15:09:46 Jitter:0 0 0 0 0 0 0 0 0 0: Buff:8 WC:1 Avg:0
15:09:46 Pkloss:0 0 0 0 0 0 0 0 0 0: Oofo:0 WC:0 Avg:0
15:09:53 active trunk-group 91 member 3 cid 0x2b67

The trunk is siezed at 09:41, the number dialled at 09:43 but it only goes active at 09:53.

I will try to change the gain to see what the outcome it.

 

[Mitch672]

CO trunk signalling is MUCH, MUCH, MUCH slower than signalling from a PRI. You are LUCKY they connect in only 15 seconds, I think that is actually fast for a device connected as a CO trunk...

mitch


AVAYA Certified Specialist

 

[definityandcmuk]

what happens if you dial the number and press # after the last digit?

 

[tsturg]

Same thing. The time taken is the same if I press the # or not