09-27-2004 09:01 PM - edited 03-13-2019 06:29 AM
Hi All,
Is 3640 a good choice for VOIP gateway? We need to connect 4 pabx ds1 interfaces to 4 voice e1 interfaces on a cisco router. We thought of getting 2 3640s with 2 voice network modules (with e1s),
How many voice network modules can we have on a single 3640 before we run into CPU util. issues? What NM is recommended for connecting to digital pabx e1 interface? What is the best IOS version and feature for the job?
Your help is much appreciated.
Thanks.
Ivan
NE
09-27-2004 11:20 PM
I have been using 3640 as voice gateways for many years, You need qty 2 NM-HDV-1E1-30 or qty 1 NM-HDV-2E1-60 network modules, and and ensure you have maximum memory and flash, currently running ios 122-15T13 without any probs.
09-28-2004 02:42 PM
Thanks mate. We will use 3640 then.
Would you by any chance have any configuration samples/references for interfacing to a PABX and geheral voip?
Your help is much appreciated.
Ivan
09-28-2004 04:27 PM
what is the pabx interface is it E1 isdn pri? if pri what isdn switch type is it? or does it use r2 signalling? I need to know before i can help you further
Richard.
09-28-2004 05:53 PM
Hi Richard,
Thank you very much for your help.
We have Avaya Pabx.
Pabx DS1 interface is an E1 with ETSI signalling (we can also do e1 CAS instead) signalling.
PABX interface conf is below (the ones I can see):
bit rate: 2.048
Signalling Mode: ISDN PRI
Interworking Message: PROGress
Interface Companding: allow
Idle Coede: 11111111
Line Coding: HDB3
Country Protocol: ETSI
Protocol Version: a
CRC: yes
DCP/Analog Bearer Capability: 3.1KHz
Slip Detection: Yes
I am still trying to find out what pri switch type we use here.
let me know if you need more info.
Thanks a lot Richard.
Regards
Ivan
09-28-2004 08:29 PM
OK ETSI is euo-isdn which is net5, so here is basic config
controller E1 2/0
pri-group timeslots 1-31
clock source internal < provide clock for PABX
interface Serial2/0:15
no ip address
no logging event link-status
isdn switch-type primary-net5
isdn incoming-voice voice
isdn T310 60000
isdn sending-complete
isdn protocol-emulate network < so the pabx thinks its connecting to a cenral switch across the pstn
no cdp enable
dial-peer voice 1001 pots
incoming called-number .
direct-inward-dial
port 2/0:15
dial-peer voice 5000 pots
destination-pattern 0 <> or what ever suffix you want to go to that pabx
direct-inward-dial
port 2/0:15
HTH
Richard
09-28-2004 08:44 PM
Thanks Richard
This is very helpful.
Regards
Ivan
12-13-2004 07:23 AM
Hello,
I have the same setup
Connecting Cat-6500 CMM gateway to Lucent Definity G3i PBX via E1 ISDN PRI & Cisco CallManager
I have a lot of parameter in Lucent such as :
interface ( User or network ), Connect ( BPX or network or host, line side ), country 7 protocol version.
Can you please help me with the Lucent PBX & Cisco CMM Configuration ?
Regards
Mohamed Abdallah
09-28-2004 02:45 PM
Hi again,
What IOS feature set do we need for VOIP on 3640?
Is it IP PLUS?
Regards
Ivan
09-29-2004 12:47 AM
yes
RB
09-29-2004 03:28 PM
Thanks Richard.
I appreciate your help.
Regards
Ivan
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