Basic IP questions

[Djarum]

I currently have a g3si in one of my locations and a Nortel option 11c which is ip enabled.
What I’m looking to do is ip enable my pbx and for step one qsig into the Nortel. I have r11 and have the basic ip options turned on but am missing the hardware to get it going. I am looking for some sort of upgrade path to do ip calls over a wan/internet and then also from the switch to the end user. I will also be brining up 2 small call centers outside of the country and be able to use ip to transfer to and from them.
So can I get away with popping a c-lan and medpro card in my pbx and I will be okay or do I have to move toward an s8700. in addition does anybody know a vonage type service for call centers where I could get 2 ip t-1 and they would do the switching at the far end CO in essence getting rid of most of my LD charges.
TIA

 

[nohuhu]

Djarum,

no you don't have to upgrade. since you have r11, you should purchase at least one c-lan board, one medpro and a right number of ip trunk licenses. there are no physic layer with ip so it's not t1 nor e1, in essence it's just an isdn link with flexible number of b-channels. one medpro contains 64 dsp resources so basically it can provide up to ~30 concurrent voice channels with g.729a codec that has high compression rate and is mostly used for wan connections. since ip trunk is isdn you can use it like any other isdn circuit, including public network connections, private dcs or q.sig links and so on. to use q.sig you need to have at least basic q.sig, supplementary services is better. you can check it on the disp sys cust page 9 if i remember correctly, this page is dedicated to q.sig options.
of course you can trunk into your remote sites but be warned that ip is somewhat tricky: you need to contract some provider that can guarantee quality of service along the path. nowadays almost all provides have such packages, look for 'voice over ip' or 'voice vpn' or something like this.

 

[Djarum]

one more quick question,
medpro or mapd card, what are the plus and minuses of each and can i use either for this type of application. The cost of the mapd is 1/4 a medpro or is the mapd only for using a s800 gateway.
thanks

 

[nohuhu]

Djarum,

1. there is no such gateway as s800.
2. map-d board has no relation whatsoever to ip telephony. it is used as a lan gateway for cti functionality.

you don't have any choice really.

 

[Djarum]

sorry the 7 fell out of s8700 while i was typing. thanks for all your help

 

[nohuhu]

Djarum,

anyway, s8700 is not a gateway, it's a media processor. and by the way, map-d application circuit pack reaches its end-of-life so i'd recommend just forget about it. co-resident dlg now and application enablement services in cm3 will do the same function as map-d but without separate piece of hardware.

 

[beansie]

Djarum,
The s8700 is the dual set of servers that house the processor.
The gateway or G650/G700 is the carrier/cabinet that houses the station cards, T1 cards, Medpros, CLans, etc.
The media processor akd Medpro is not the same as s8700.

Secondly, as far as I know the map-d application is still valid and will be for some time into the future. There is "embedded asai" available which takes the place of what a map-d does, but if you are a Cisco shop they haven't tested and blessed that interface.