Voice over IP

Team,We have had a strange issue for some time. We have an Nortel 81c intergrated with CallManager (v3.1(3a) using two VG200s (12.2(11) T). Everything works well and this hybrid network has been stable for the last 1.5 years. However, on the Norte...

Hi All,I got problem with call retrying. My Cisco AS5400 connects to Excel switch via E1, i saw many failed calls with same number, same disconnect code, just different one or two seconds in starting time. I want to stop retrying that calls by puttin...

The Paris telco has onsite and states the BRI line is fine, any ideas? Does Paris telco has auto spid? Do I need a special ISDN cable for use in Paris? Do I have the right hardware ISDN card? Router#show run interface BRI0/2/0 no ip address isdn swit...

I am curious if anyone else has had this problem. My users are experiencing garbled messages, or what sounds like intereference and sometimes cut-outs, when accessing their voicemails. However, it apparently isn't on the voicemail itself because wh...

our customer opens a Call center with Nortel CS1000 ACD, and PBX. They want to integrate voip with this equipments and propose Nortel Passport 8610 switch as the core switch for voip, and data. Can Cisco Cat 6509 fits into this and replace the Nortel...

Hello.Please, help me with the next trouble:AS5350 IOS 12.3,How to increase isdn t301 timer ?When i'm trying to isdn t301 1000,the machine does not understand command.How can it be done?

Gents:I am wondering if you somebody could help me understanding the call-flow in two scenarios.Some basic network setup(Planned, not in place yet)We have two sites in Philadelphia, 2 miles apart, and planning to install MPLS VPN between the sites.We...

I have several end user now that are using the cisco softphone. Most of these users are frequent travelers, therefore they have a physical phones in their office. In recent months, we have began to rollout the softphones to our home users. For the mo...

i have an as5850 terminating calls into a mobile network and have this problem of false connect on the calls. Can anyone help me out here

can e1 configured as r2 send ani to pbx?and isdn?

This is our traffic diagram: TDM(MF-FGD) ->AS5400(SIP)-> SBC(2), at peak traffic hour, one SBC could be over-loaded, we need come with a solution in AS5400 for traffic failover. the similar solution I have found for H323 is like -voice class h323 1h2...

Hello ThereIs any Prof can help me?1-Can you please tell me the link where I can get a Voice over IP ISP Design solution?2-what are the specific requirement for a small startup VoIP carrier/provider.

Now ,the phone can't access voicemail(When I dial voice mail pilot number ,only fast busy tone) . And after I restart unity service ,the unity come to work well . why ?During restart unity service process , the system prompt on web : Error:XML fetch ...