SIP Trunk on CUBE

[Nizar Abuseni]

Hello,

What is the difference if I have one link with SP for the SIP Trunk (Signaling and Bearer in one link), and when I have Signaling in a connection and the Bearer in a separate connection?

how can I calculate the Bandwidth for the Signaling Connection, for example we need 800 G711ulaw calls for this SIP Trunk connection.     

Does SIP trunk support for 800 calls in one ethernet connection? or there is limitation and i should go for the two separate links one for signaling and one for bearer.

Does CUBE support Transport protocol :RCTP or UDP?

Can I have Active/Standby ports on CUBE for the SIP trunk?

regards,

Nizar

[Gordon Ross]

Have you looked at

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6790/gatecont/ps5640/product_data_sheet09186a00801da698.html ?

It shows, for example, that a 39xx series router can handle 1,000 calls.

GTG

[Ayodeji Okanlawon · Accepted solution]

Nizar,

Yes cube can handle 800 calls.

To calculate your bandwith/call you need to do the following:

bw/call= ((bytes/sample +protocol payload)x codec)/bytes/sample

where bytes/sample= (samplesize*codec bw)/8

where protocol payload= IP+UDp+rtp+ethernet layer 2 overhead

in this case= 20+8+12+18=58bytes

so for g711 over ethernet, you will have with 20bytes/sample (20ms packetization)

bytes/sample= 20*64/8 = 160bytes

bw/call= 160+58*64/160=87Kbps..

so for 800 calls you will need 87*800=69.600Mbps

2. Yes CUBE can transport over UDP or TCP.

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