bandwidth requirement for call signaling, cucm on the cloud.

[hamed1900]

Hi,

How I can calculate bandwidth requirenemnt for call signaling and TFTP for remote Site using cucm, Unity, Contact Centre on the Cloud?

Thanks,

Hamed

[Leo Salcie Tejeda]

Hi Hamed,

It depends the encapsulation used to send/receive packets but for SCCP/SIP signaling I always assume the10% bandwith use for RTP as a guideline for the signaling bandwith.

When you're running TFTP there's not way to assume a amount of bandwith because the phones always will try to download the files as fast as they can because is a application not just signaling. Remember TFTP is on the application layer:

OSI model
7. Application layer
NNTP SIP SSI DNS FTP Gopher HTTP NFS NTP SMPP SMTP SNMP Telnet DHCP Netconf (more)
6. Presentation layer
MIME XDR
5. Session layer
Named pipe NetBIOS SAP PPTP RTP SOCKS SPDY TLS/SSL
4. Transport layer
TCP UDP SCTP DCCP SPX
3. Network layer
IP IPv4 IPv6 ARP ICMP IPsec IGMP IPX AppleTalk
2. Data link layer
ATM SDLC HDLC CSLIP SLIP GFP PLIP IEEE 802.2 LLC L2TP IEEE 802.3 Frame Relay ITU-T G.hn DLL PPP X.25
1. Physical layer
EIA/TIA-232 EIA/TIA-449 ITU-T V-Series I.430 I.431 PDH SONET/SDH PON OTN DSL IEEE 802.3 IEEE 802.11 IEEE 802.15 IEEE 802.16 IEEE 1394 ITU-T G.hn PHY USB Bluetooth RS-232 RS-449

Regards

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MDGDP, CCNA, CCNA Voice, CCNP Voice Certified

[hamed1900]

Hi Leo,

Thank you for your reply.

If the UC solution is on the cloud, I do not need to consider RTP as it runs between users in this case.

For TFTP fair enogh, I agree with you but how much bandwidth exactly CUCM uses for  signaling  per Call?

Thanks,

Hamed Monfared

[Leo Salcie Tejeda]

It depend the codec you're running. Use the link give by Islam below.

Regards

Please rate all useful posts
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LinkedIn Profile: do.linkedin.com/in/leosalcie
MDGDP, CCNA, CCNA Voice, CCNP Voice Certified

[islam.kamal]

Hi

Your required bandwidth will be based on your codec which will be used , kindly find the below links

https://learningnetwork.cisco.com/docs/DOC-7873

https://learningnetwork.cisco.com/thread/26795

https://learningnetwork.cisco.com/docs/DOC-11113

Thank you

please rate if this will help